presentation on heart

Cardiovascular System

• It is know as the “transportation” system of the body

Structures Include:

-Blood Vessels

Layers of the Heart

• Endocardium
• Smooth layer
• Lines the interior
• Valves are made from this layer
• Muscle layer
• Thickest layer
• Thin, outermost layer
• Joins with serous lining outside the heart to form the Pe ricardium
• Separates the left and right heart
• Interatrial – top part of the septum
• Interventricular – bottom part of the septum

The Four Chambers

• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle
• Right Atrium – receives blood from the superior and inferior vena cava
• Right Ventricle – pumps blood to the lungs
• Left Atrium – receives oxygenated blood from the lungs
• Left Ventricle – pumps oxygenated blood to the rest of the body, strongest chamber
• Valves are important to control the flow of blood from one chamber of the heart to another .
• Valves allow blood to flow in only one direction

Heart Valves

Tricuspid valve – opening between right atria and right ventricle

Pulmonary semilunar valve – opening between right ventricle and pulmonary artery

Mitral valve (also called bicuspid) – opening between left atrium and left ventricle

Aortic semilunar valve – located between left ventricle and aorta

• Chordae tendineae – threads, keep valve flaps from flipping up into the atria
• Right Atrioventricular (tricuspid valve) – between the right atrium and right ventricle, has 3 flaps, prevents blood from flowing back into the right atrium
• Pulmonic (semilunar valve) – between the right ventricle and the pulmonary artery, prevents blood from flowing back into the right ventricle
• Left Atrioventricular (bicuspid valve) – between the left atrium and left ventricle, prevents blood from flowing back into the left atrium, has 2 flaps (mitral valve)
• Aortic Valve – between the left ventricle and the aorta, prevents blood from flowing back into the left ventricle

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Drop-in Articles, PowerPoint Slides and Flyers

Use these PowerPoint slides during online educational presentations or anywhere in your community with a screen such as waiting rooms, faith-based services, cafeterias and more. You can also print out and use as flyers.

#OurHearts eat healthier together. Get heart healthy for life by following the Dietary Approaches to Stop Hypertension (DASH) eating plan. It can help lower high blood pressure. It requires no special foods and provides daily and weekly nutritional goals. Support your loved ones in their effort to stick to DASH by doing the following together: pick out recipes to try, go grocery shopping for ingredients, cook heart healthy versions of family favorites, eat the meals you've prepared.

#OurHearts are healthier when we quit smoking together. Smokers are up to 4x more likely to develop heart disease or to have a stroke, compared to nonsmokers. But it pays to quit. Just 1 year after quitting, your heart attack risk drops sharply. Ask your family and friends for support or  join a support group. Tell your family, friends, and coworkers that you're quitting and you want their help. Ask them not to smoke around you. They might catch the bug too: Research has shown that people are much more likely to quit if their spouse, friend, or sibling stops smoking.

#OurHearts are healthier when we work together. There's a lot we can do to keep our hearts healthy. Even small changes can make a big difference. Best of all, connecting with others makes those efforts more successful. To help prevent heart disease, we need to: move more, follow a healthy eating plan, reduce stress, improve sleep, and quit smoking.

#OurHearts are healthier when we move together. Physical activity is a great way to  help protect your heart from heart disease. Keep your heart healthy and aim for at least 2 1/2 hours of moderate physical activity every week. Doing heart healthy activities with a friend will keep both of you inspired for the long run. Invite a friend to walk with you regularly. Join an exercise class at the community center with a neighbor and carpool to make sure you both show up. Organize a weekly game of basketball with your friends.

#OurHearts track our health stats together. Smoking, being overweight, having diabetes, having unhealthy blood cholesterol levels, or having a family history of heart disease, increases the likelihood you'll develop heart disease. Make a plan with a friend to get heart healthy and track your progress. Remind each other to keep a log of your blood pressure, healthy weight goals, and physical activity.

Drop-in Articles

Copy and paste these prewritten drop-in articles into your newsletters, bulletins, blogs, or website. Or send them to your local media and ask them to do a story for American Heart Month. Add your organization’s logos, images, or graphics to personalize them. (Please note: These articles are provided for educational purposes and should not be distributed as press releases or contain the NHLBI or The Heart Truth® program logos without permission.)

Taking Action to Protect #OurHearts

Taking Action to Protect #OurHearts (in Spanish)

Are You Heart Smart? What to Know for a Healthier Heart

Healthy Eating for a Happy Heart

Reduce Stress for a Healthier Heart

Make Heart Health Part of Your Self-Care Routine

Celebrate American Heart Month: Join the #OurHearts Movement

Bring American Heart Month to Your African American Community: Join the #OurHearts Movement

Bring American Heart Month to Your Hispanic/Latino Community: Join the #OurHearts Movement

Bring American Heart Month to Your Hispanic/Latino Community: Join the #OurHearts Movement (in Spanish)

Home Anatomy of the Human Heart PowerPoint Shapes Anatomy of Human Heart PowerPoint Presentation

Anatomy of Human Heart PowerPoint Presentation

Located in the slide design is an Anatomy of Human Heart PowerPoint Presentation , which may be used as a visual aid to illustrate the parts of a heart, which is ideal for a presentation of proposals for new medical developments.

This PowerPoint slide shows a cross-section illustration of the human heart. This illustration shows the parts of the heart such as the veins, arteries and its chambers. It also shows each part labelled with its medical names. The heart’s walls and muscles are also very visible in this illustration. Another notable feature of the illustration is the clearly depicted borders and divisions of each chambers and veins. In this design, the part muscle part is clearly identified by its pink color and white borders around it. The PowerPoint objects are 100% editable to suit the presenter’s needs and preferences.

Return to Anatomy of the Human Heart PowerPoint Shapes .

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Welcome to MedicPresents.com’s free Cardiology presentations’ section. This section of the website hosts Free Cardiology PowerPoint presentations and free Heart PowerPoint presentations prepared by doctors, academicians, students and other professionals, who often create presentations on Cardiology for hospitals, universities and other organizations. Cardiology PowerPoint presentations are an important element of the medical professionalism in the field of Heart and Cardiology. A Good Cardiology presentation however, requires lots of research on the subject and off-course a competent subject matter expert on Cardiology. As it is our vision, we take the responsibility of helping you out with research by providing you with free professional Cardiology PowerPoint presentations. It is MedicPresents.com’s vision to relieve medics of the hard work of research on the subject matter of the selected topic of your Heart or Cardiology PowerPoint presentation. As such, the medical website provides medics with professional Cardiology PowerPoint presentations for free. These free Cardiology PPT presentations are all focused on the content needs of the Cardiology field in healthcare industry and focus on Cardiology themes, terms and concepts. Download Free Cardiology PowerPoint Presentations We invite you to download the free Cardiology PowerPoint presentations under this section. This section of the website provides medics with a huge library of free Cardiology PPT presentations with topics like Cardiology, Heart, Cardiovascular Blood Pathway, Blood, Heartbeat and many other Cardiology concepts and themes. These free Cardiology PPT presentations are for medics including doctors, healthcare professionals, academicians, marketing professionals and students etc. PowerPoint presentations on Heart and Cardiology are frequently searched online these days and hence we came up with this digital library of free Cardiology PowerPoint presentations for medics on various Cardiology Themes. This section of free Cardiology PowerPoint presentations on our website contains Cardiology presentations prepared by medics who often need to create powerful Cardiology presentations for Hospitals, Universities and other medical and healthcare organizations. Our Cardiology PowerPoint presentations include presentations on Cardiology, Artery, Cardiology Care, Blood Pressure, Ecg Test, Electrocardiogram Test, Electrocardiography, Heart, Cardiovascular Blood Pathway, Blood, Heartbeat and many more concepts and categories in the field of Cardiology. If you are going to prepare a Cardiology presentation to present in a seminar, workshop or conference, you can compare with multiple similar Cardiology presentations given here. At times, you are busy and really constrained of time. In such situations you can use these Cardiology PowerPoint presentations as they are, without any modification or with slight modification. During such instances, please give the authors the credit they deserve and do not change the author's name if you download the Cardiology presentations.

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HEALTH A TO Z

• Eye Disease
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The heart-to-plate connection: A diet plan your heart will love

The critical role of a healthy and balanced diet in maintaining cardiovascular well-being cannot be overstated. After all, the heart is at the core of everything we do, from powering muscles to pumping blood and nutrients to other parts of the body. While genetics play a part in how easy it is for someone to maintain their heart health , this organ is strengthened throughout a person’s life by a carefully curated menu of foods.

How healthy eating relates to heart health

The ultimate goal of making heart-healthy food choices is to reduce the risk of heart disease, which remains the leading cause of death worldwide . These choices have profound implications for heart health, influencing risk factors such as cholesterol levels, blood pressure, inflammation, and weight:

1. Cholesterol management: Foods rich in unhealthy fats, particularly trans fats and saturated fats, can raise LDL (bad) cholesterol levels. Elevated LDL cholesterol is a significant risk factor for atherosclerosis, where plaques form on artery walls, potentially leading to heart attacks and strokes. Conversely, diets high in healthy fats, such as omega-3 fatty acids, can increase HDL (good) cholesterol levels, which help remove LDL cholesterol from the bloodstream.

2. Blood pressure control: High sodium intake is linked to hypertension (high blood pressure), a condition that strains the heart and blood vessels, increasing the risk of heart disease. A diet rich in fruits, vegetables, whole grains, and low-fat dairy can help lower blood pressure.

3. Inflammation reduction: Chronic inflammation is a key player in the development of heart disease. Foods high in antioxidants, like fruits and vegetables, combat inflammation and oxidative stress, protecting the heart.

4. Weight management: Obesity is a major risk factor for heart disease. A balanced diet helps maintain a healthy weight, reducing the burden on the heart and decreasing the risk of associated conditions like diabetes and hypertension.

Foods that encourage heart health

To support heart health, it’s essential to focus on nutrient-dense foods. Here are some key components of a heart-healthy diet:

1. Fruits and vegetables: These are rich in vitamins, minerals, and fiber. They also contain antioxidants that protect against heart disease. Aim for a variety of colors to ensure a broad range of nutrients.

2. Whole grains: Foods such as oatmeal, brown rice, and whole wheat bread are excellent sources of fiber and have been shown to lower cholesterol levels and improve heart health.

3. Lean proteins: Opt for lean meats, poultry, fish, and plant-based proteins like beans and legumes. Fish, particularly fatty fish like salmon and mackerel, are high in omega-3 fatty acids, which are beneficial for heart health.

4. Healthy fats: Incorporate sources of unsaturated fats such as avocados, nuts, seeds, and olive oil. These fats help balance good and bad cholesterol levels while reducing inflammation.

5. Low-fat dairy: Dairy products are great sources of calcium and vitamin D, but be sure to avoid the ones with higher saturated fat content.

6. Herbs and spices: Use these to flavor food instead of salt. Natural herbs and spices can add depth and flavor to meals without the negative impact of sodium on blood pressure.

Foods to eat in moderation

Who doesn’t love a good splurge? Allowing yourself some junk food occasionally can actually help you stick to your health goals, but it’s important to not indulge too often. With that in mind, try to limit your consumption of the following:

1. Sodium: Found in processed foods, canned soups, and restaurant meals. High sodium intake can lead to high blood pressure. The FDA recommends less than 2,300 milligrams of sodium per day.

2. Trans fats: These are found in many fried foods, baked goods, and margarines. Look for trans fats and partially hydrogenated oils on nutrition labels and avoid them.

3. Saturated fats: Found in red meat, full-fat dairy products, and certain oils like coconut and palm oil. While some saturated fat is acceptable, the American Heart Association recommends that it should only account for about 5% of your caloric intake each day.

4. Added sugars: High consumption of sugary drinks, candies, and desserts can lead to obesity and diabetes, both of which are risk factors for heart disease. Opt for foods with natural sugar, look at the nutrition labels of what you buy, and try not to excessively sweeten drinks like coffee or tea.

5. Alcohol: Excessive drinking increases the risk of high blood pressure, heart failure, and stroke. Men should limit themselves to two drinks per day and women to one drink per day.

A healthy and balanced diet is foundational to heart health. By focusing on nutrient-rich foods and moderating the intake of harmful substances, the risk of heart disease can be significantly reduced, promoting overall cardiovascular wellness.

WellSpan is a regional leader in premier heart care. They are committed to providing comprehensive heart treatment to all patients with a specialized team of heart health experts and the latest technology and medical advancements. WellSpan’s team can perform heart surgery, respond to emergency heart failure, treat chronic disease, and maintain general cardiovascular care throughout patients’ lives.

To learn more or book an appointment with WellSpan, visit their website .

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HEALTH MATTERS

Stanford scientists share practical prevention tips for inflammation, cognitive health, and heart disease at Health Matters

The Bay Area community was out in full force on Saturday, May 18, for Stanford Medicine’s annual free community health event, Health Matters . Held outdoors on the medical school campus, more than 1,500 attendees gathered to listen to health talks and explore interactive exhibits at a health pavilion staffed by professionals from Stanford Medicine and Stanford Health Care.

In the three health talks, Stanford Medicine physician-scientists spoke to a full-capacity crowd about their latest research and practical tips to fight inflammation with food, maintain brain resiliency, and improve cardiovascular health. Another 500-plus people tuned in via livestream.

Food’s protective power against inflammation

Inflammation is an appropriate adaptive response, signaling the body to fight off infection or heal an injury. But when the body is in a state of chronic inflammation, it can contribute to obesity, cardiovascular disease, Alzheimer's, diabetes, depression, autoimmune disease, and even cancer. Remarkably, fighting inflammation begins in the kitchen, according to the day's first speaker.

Tamiko Katsumoto, MD, discusses food as medicine at Health Matters. Photo by Steve Fisch.

“The biggest driver of chronic inflammation is something we have control over, and that is our diet,” said Tamiko Katsumoto , MD, clinical associate professor of medicine–immunology and rheumatology. There is an epidemic of chronic disease in the United States. Currently, 6 out of 10 adults have one chronic disease, with the primary driver being poor nutrition. The standard American diet, comprised of ultra-processed foods and animal products, is now the leading cause of poor health. Switching to a plant-based diet can help quell inflammation if it’s already started and reduce the chances of developing chronic inflammatory diseases, said Katsumoto. It can also help reduce the growing rates of obesity in our country. “Plant-based diets can be extremely powerful, and food can be medicine.”

Aiming for a whole-food, plant-based diet is not just good for overall health; it’s also good for the planet—a cause Katsumoto is equally passionate about. “If the world's two billion consumers cut their meat and dairy consumption by 40%, it would save the land area two times the size of India and avoid 168 billion tons of greenhouse gas emissions,” Katsumoto said.

Brain power

“We are in an explosion of brain science,” said Frank Longo , MD, PhD, the George E. and Lucy Becker Professor of Medicine and professor of neurology and neurological sciences. “For centuries, the brain has been a black box where scientists did not know what was going on in the brains of living people. During the past few years, technologies have become available that are rapidly changing that reality.

New imaging technology, coupled with omics—the ability to measure thousands of genes and proteins in the blood or spinal fluid—gives scientists a once-impossible view of living people's brains. “This revolution in neuroscience has yielded advanced methods for detecting and treating brain disorders than were previously imaginable just a few decades ago,” said Longo. These technologies have opened the door to new insights and strategies to help increase brain resiliency.

Frank Longo, MD, PhD, discusses breakthroughs in neurological sciences. Photo by Steve Fisch.

While there is no current curative treatment for the most common forms of cognitive decline—dementia, Lewy body dementia, and Alzheimer’s—there are several lifestyle changes people can make to improve brain resilience and function, including exercise, diet, cognitive engagement, and sleep. Longo said exercise has the most profound impact, reducing the risk of developing Alzheimer’s by 50%.

What researchers have discovered is that neurodegenerative diseases such as Alzheimer’s are the result of multiple factors—amyloid plaques, Tau tangles, and neuro-inflammation—and, as such, require powerful drugs that address multiple mechanisms. Cognitive decline also begins decades before symptoms occur. In his health talk, Longo discussed two promising new therapies being studied to reduce the progression of dementia. The first, a new compound developed by the Longo Lab, normalizes abnormal proteins that accumulate in the spinal fluid 10 to 20 years before Alzheimer’s disease starts. Results of first-in-human trials show that taking this drug early could delay the onset of Alzheimer's by 10 years, potentially eliminating 90% of cases, he said. The drug is scheduled to undergo a major Phase 3 trial at multiple centers across the United States in the next 12 to 18 months. He also mentioned an ongoing clinical trial at Stanford to study an amyloid reduction antibody treatment.  

Improved imaging, novel blood tests and biomarkers, and robust clinical trials continue to illuminate the biology of the brain and provide hope for new treatments that will prevent or slow down the onset of Alzheimer’s and other neurodegenerative diseases.

Protecting your heart

In a Q&A-style talk,  Joseph Wu , MD, PhD, the Simon H. Stertzer, MD, Professor of Medicine, director of the Stanford Cardiovascular Institute, professor of medicine–cardiology and of radiology, and current president of the American Heart Association, shared his expertise on a variety of heart health topics, ranging from wearables technology to weight loss medications, current CPR guidelines, supplements, and the indispensable role of exercise and diet in maintaining cardiovascular health.

Joseph Wu, MD, PhD, discusses how to improve heart health. Photo by Steve Fisch.

To help reduce the risk of heart disease, Wu highlighted four modifiable lifestyle changes everyone can implement—exercise, sleep, avoiding tobacco, and diet. Monitoring disease risk factors, specifically LDL cholesterol, high blood pressure, diabetes, and body mass index (BMI), is also critical for patients and their clinicians in managing cardiovascular health. For patients with high cholesterol, Wu said the gold standard treatment continues to be statins, a drug that blocks the liver from synthesizing cholesterol. “Statins are very effective and very safe,” said Wu, who takes one himself to control his cholesterol.

While statins remain a vital tool in a cardiologist’s arsenal, weight loss is the next frontier. Wu addressed the benefits of medications known as GLP-1 agonists, such as Ozempic and Wegovy, which work to tell your brain you’re full, slow down your gut so you feel full, and reduce glucose. When taken over three years by patients with a history of heart attack, stroke, or peripheral artery disease, these medications were shown to lower the risk of recurrence of these conditions by 20%. “Reducing body weight by just 10 to 20% dramatically improves your cardiovascular health,” Wu said.

Another area of increasing attention in cardiovascular medicine is the advent of wearable devices that track exercise, heart rate, and sleep. Wu noted that these modern smartwatches and rings can provide patients and physicians with objective health data and even help detect cardiac abnormalities.

Watch all three health talks in full  here .

Examinations of major salivary glands and heart reveal pathophysiological progression of Parkinson's

R esearchers have reported that patients with Parkinson's disease (PD) exhibiting sympathetic denervation in the major salivary glands and the heart tend to have more advanced non-motor symptoms as they age, suggesting that age plays an important role in disease progression.

This research outcome could potentially contribute to a better understanding of the pathophysiological progression of PD. The work is published in the Journal of the Neurological Sciences on 15 March 2024. The researchers include Dr. Junya Ebina and Professor Osamu Kano from the Department of Neurology, Toho University Faculty of Medicine, along with Professor Sunao Mizumura from the Department of Radiology.

PD patients with sympathetic denervation in the major salivary glands and heart , as indicated by MIBG scintigraphy, are older and have more severe non-motor symptoms, such as olfactory dysfunction, REM sleep behavior disorder, and autonomic nervous system dysfunction according to questionnaire scores, compared to groups with single sympathetic denervation or non-sympathetic denervation. However, cognitive function, duration of illness, and MDS-UPDRS motor symptom scores were comparable between the groups.

In this study, a quantitative semi-automatic method developed by the research group last year was used to analyze MIBG uptake in the major salivary glands and heart. This comparative study of clinical symptoms focusing on peripheral organs in patients with PD may provide a new perspective on disease progression.

This study may contribute to understanding the pathophysiological progression of PD, leading to a more accurate staging of PD and enabling tailored medical care according to individual patient conditions. The research group is also examining the utility of novel adjunct diagnostic methods.

Presentation overview

PD is a progressive neurodegenerative disorder characterized by abnormal aggregates of α-synuclein known as Lewy bodies. Lewy bodies are not only found in the central nervous system but also in peripheral organs. In PD, cardiac sympathetic denervation detected by 123 I-metaiodobenzylguanidine (MIBG) myocardial scintigraphy is associated with the presence of Lewy bodies.

Conversely, although Lewy bodies are frequently found in the digestive tract, including in the major salivary glands, the process of pathophysiological progression in peripheral organs is unclear. A research group previously reported sympathetic denervation in the submandibular and parotid glands of patients with PD.

Therefore, in this study, they hypothesized and verified whether patients with PD and sympathetic nerve dysfunction in the heart and major salivary glands have more advanced clinical symptoms.

Patients with PD with sympathetic denervation in both major salivary glands and heart areas (dual-SD group) were found to be older, have more severe olfactory dysfunction, and a higher likelihood of having REM sleep behavior disorder and severe autonomic nerve dysfunction compared to the single-SD group or non-SD group.

However, the duration of illness and cognitive function were similar among the groups. Logistic regression analysis with age, sex, and duration of illness as variables showed that age was an important factor affecting clinical evaluation items in the progression of the disease.

In conclusion, patients with PD and decreased MIBG uptake in both the major salivary glands and heart areas exhibited a progression of symptoms centered around non-motor symptoms, suggesting that autonomic nerve dysfunction may progress independently of nigrostriatal dopaminergic degeneration.

Furthermore, the potential contribution of age to the pathophysiological progression of PD was suggested. This study may aid in understanding the pathophysiological progression of PD and may be used for future staging of individual patients.

More information: Junya Ebina et al, Clinical characteristics of patients with Parkinson's disease with reduced 123I-metaiodobenzylguanidine uptake in the major salivary glands and heart, Journal of the Neurological Sciences (2024). DOI: 10.1016/j.jns.2024.122932

Provided by Toho University

Baby Your Baby- One Day Infant CPR and Car Seat Safety Class

by Intermountain Health

Babies usually have healthy hearts. But if an infant stops breathing, or is struggling to breathe, or has an unknown heart condition, or is seriously injured, their heart could stop. Doing cardiopulmonary resuscitation (CPR) greatly improves the chances a baby whose heart has stopped will survive. Immediate high-quality CPR will double or triple a person’s chance of survival.

It’s important for parents and anyone who cares for a baby to know infant CPR. That includes daycare providers, grandparents, or babysitters.

“Intermountain Health now offers an infant CPR class which is taught virtually. People can learn infant CPR in one 90-minute class taught live online from a qualified instructor. This makes the class very convenient for people since it can be done from the comfort of their home,” said Angie Skeen, a community education coordinator with Intermountain McKay Dee Hospital.

“Infant CPR is also taught in person at McKay Dee Hospital in Ogden. Both the virtual and online classes are offered on either a Tuesday or Thursday in the afternoon or evening or on a Saturday, so there are lots of options for busy parents,” said Skeen

The cost of the class is $15. The class size is limited to 12 people so each person can learn and practice infant CPR.

“There are important differences in giving CPR to infants compared to adults. Infants’ bodies are smaller and require less force and depth when compressing and less air when giving breaths. You need to use just two fingers or two thumbs to do the chest compression on a baby. When you do the breaths, you cover the baby’s mouth and nose with your mouth and give a small natural puff of air,” said Skeen.

Seven Steps of Infant CPR by the American Heart Association:

• Tap and shout. Check for a response by tickling or tapping the infant’s foot.
• Shout for help. Phone or send someone to call 911.
• Look for breathing or only gasping for 5-10 seconds.
• Push hard and fast in the center of the chest at a rate of 100-120 compressions per minute. Give 30 chest compressions to baby with two fingers or with two thumbs.
• Open the airway by tilting the head back and lifting the chin. Cover the baby’s mouth and nose with yours and give 2 natural breaths.
• Repeat sets of 30 compressions and 2 breaths until the infant responds or advanced medical help arrives.
• If you are alone after 5 sets of compressions and 2 breaths, take the infant with you to call 911.

For compressions there are two methods. You can use two fingers in the middle of the chest below the breastbone and push 1.5 inches deep making sure to allow the chest to recoil before compressing again. Or use the encircling method by putting your hands around the infant’s chest and do compressions with both thumbs, which are stronger than fingers. Give 30 quick compressions at the rate of 100-120 beats per minute. A good way to remember the speed is to compress to the beat of the song “Staying Alive.”

Before giving breaths , tilt baby’s head back and lift their chin to open their airway. Getting the air way at the right angle is important. Cover baby’s mouth and nose with your mouth. Give two natural breaths and watch for baby’s chest to rise and fall. If the 1st breath doesn’t go in readjust the airway and try for a 2nd breath if the 2nd breath doesn’t go in, move on just do compressions.

The Infant CPR class does not include CPR certification. But Intermountain also offers a Heart Saver class people can take if they want to get certified in CPR. The class also covers car seat safety. Skeen is passionate about car seat and seat belt safety due to personal experience.

“I lost my 9-month-old baby and my mother sixteen years ago in an automobile accident where an impaired driver crossed the center line and crashed into our car head-on,”

“When I was at the hospital after my baby was born, I saw a flyer about car seat safety and had the experts at McKay Dee Hospital check to see if our car seat was installed correctly before we left the hospital. I’m forever grateful I had done everything possible to make sure my baby was as safe as possible in his car seat,” added Skeen.

For more information visit the classes and events page on intermountainhealth.org Or call 801-387-7800.

Functions of the Heart

Sep 11, 2014

411 likes | 3.11k Views

Functions of the Heart. Generating blood pressure Routing blood Heart separates pulmonary and systemic circulations Ensuring one-way blood flow Heart valves ensure one-way flow Regulating blood supply

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• blood pressure
• cardiac muscle
• body temperature
• heart rate decreases
• force match blood delivery

Presentation Transcript

Functions of the Heart • Generating blood pressure • Routing blood • Heart separates pulmonary and systemic circulations • Ensuring one-way blood flow • Heart valves ensure one-way flow • Regulating blood supply • Changes in contraction rate and force match blood delivery to changing metabolic needs

Size, Shape, Location of the Heart • Size of a closed fist • Shape • Apex: Blunt rounded point of cone • Base: Flat part at opposite of end of cone • Located in thoracic cavity in mediastinum

Pericardium

Heart Wall • Three layers of tissue • Epicardium: This serous membrane of smooth outer surface of heart • Myocardium: Middle layer composed of cardiac muscle cell and responsibility for heart contracting • Endocardium: Smooth inner surface of heart chambers

External Anatomy • Four chambers • 2 atria • 2 ventricles Major veins • Superior vena cava • Pulmonary veins • Major arteries • Aorta • Pulmonary trunk

Heart Valves • Atrioventricular • Tricuspid • Bicuspid or mitral • Semilunar • Aortic • Pulmonary • Prevent blood from flowing back

Function of the Heart Valves

Blood Flow Through Heart

Systemic and PulmonaryCirculation

Heart Skeleton • Consists of plate of fibrous connective tissue between atria and ventricles • Fibrous rings around valves to support • Serves as electrical insulation between atria and ventricles • Provides site for muscle attachment

Cardiac Muscle • Elongated, branching cells containing 1-2 centrally located nuclei • Contains actin and myosin myofilaments • Intercalated disks: Specialized cell-cell contacts • Desmosomes hold cells together and gap junctions allow action potentials • Electrically, cardiac muscle behaves as single unit

Conducting System of Heart

Cardiac Arrhythmias • Tachycardia: Heart rate in excess of 100bpm • Bradycardia: Heart rate less than 60 bpm • Sinus arrhythmia: Heart rate varies 5% during respiratory cycle and up to 30% during deep respiration • Premature atrial contractions: Occasional shortened intervals between one contraction and succeeding, frequently occurs in healthy people

Cardiac Cycle • Heart is two pumps that work together, right and left half • Repetitive contraction (systole) and relaxation (diastole) of heart chambers • Blood moves through circulatory system from areas of higher to lower pressure. • Contraction of heart produces the pressure

Heart Sounds • First heart sound or “lubb” • Atrioventricular valves and surrounding fluid vibrations as valves close at beginning of ventricular systole • Second heart sound or “dupp” • Results from closure of aortic and pulmonary semilunar valves at beginning of ventricular diastole, lasts longer • Third heart sound (occasional) • Caused by turbulent blood flow into ventricles and detected near end of first one-third of diastole

Mean Arterial Pressure (MAP) • Average blood pressure in aorta • MAP=CO x PR • CO is amount of blood pumped by heart per minute • CO=SV x HR • SV: Stroke volume of blood pumped during each heart beat • HR: Heart rate or number of times heart beats per minute • Cardiac reserve: Difference between CO at rest and maximum CO • PR is total resistance against which blood must be pumped

Regulation of the Heart • Intrinsic regulation: Results from normal functional characteristics, not on neural or hormonal regulation • Starling’s law of the heart • Extrinsic regulation: Involves neural and hormonal control • Parasympathetic stimulation • Supplied by vagus nerve, decreases heart rate, acetylcholine secreted • Sympathetic stimulation • Supplied by cardiac nerves, increases heart rate and force of contraction, epinephrine and norepinephrine released

Heart Homeostasis • Effect of blood pressure • Baroreceptors monitor blood pressure • Effect of pH, carbon dioxide, oxygen • Chemoreceptors monitor • Effect of extracellular ion concentration • Increase or decrease in extracellular K+ decreases heart rate • Effect of body temperature • Heart rate increases when body temperature increases, heart rate decreases when body temperature decreases

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Jennifer Lopez cancels 2024 tour, her 1st in five years: 'Heartsick and devastated'

by MARIA SHERMAN | AP Music Writer

Jennifer Lopez has canceled her 2024 North American tour, representatives for Live Nation confirmed to The Associated Press.

"Jennifer is taking time off to be with her children, family and close friends," they said in a statement.

The tour was to be her first in five years, in support of her first solo album in a decade, "This Is Me.... Now" and its companion film.

The tour was scheduled to kick off on June 26 in Orlando, Florida, and conclude in Houston on Aug. 31. Live Nation shared that attendees who purchased tickets through Ticketmaster will be automatically refunded.

Lopez offered her own statement to fans on her OntheJLo website and newsletter, writing, "I am completely heartsick and devastated about letting you down. Please know that I wouldn't do this if I didn't feel that it was absolutely necessary."

She continued: "I promise I will make it up to you and we will all be together again. I love you all so much. Until next time"

"This Is Me... Now" was released early this year, 20 years after her hit album, "This Is Me... Then." Lopez told the AP that the new album was a "miracle," and "a second chance. And I'd love to capture this moment in time the way that album captured that moment in time."