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Heart : structure of the heart - role of the heart in the human body


 What Is Heart?

Heart, an organ that serves as a pump to flow into the blood. It can be an instant tube, as in spiders and annelid worms, or a somewhat more intricate structure with one or extra receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fish the coronary heart is a folded tube, with three or 4 enlarged regions that correspond to the chambers within the mammalian heart. In animals with lungs—amphibians, reptiles, birds, and mammals—the coronary heart suggests numerous ranges of evolution from a single to a double pump that circulates blood (1) to the lungs and (2) to the frame as an entire.

Your coronary heart is in the center of your circulatory machine. This device is a network of blood vessels, consisting of arteries, veins, and capillaries, that contains blood to and from all areas of your body. Your blood includes the oxygen and vitamins that your organs need to paint properly. Blood additionally includes carbon dioxide on your lungs so you can breathe it out. Inside your coronary heart, valves hold blood flowing inside the proper route.

What Is Heart

Your coronary heart’s electrical machine controls the fee and rhythm of your heartbeat. A healthy heart elements your frame with the right amount of blood at the price had to work well. If disease or injury weakens your heart, your body’s organs will no longer obtain enough blood to paint generally. A problem with the electrical gadget — or the apprehensive or endocrine systems, which manipulate your coronary heart charge and blood stress — also can make it more difficult for the heart to pump blood.

Circulatory system

The structure of the heart in the human body

  • The human heart is an amazing muscle. It is about the size of a person’s fist and weighs about 11 ounces. The heart is located in the center of the chest, slightly to the left. The heart pumps blood through the body by contracting and relaxing.

  • The human heart is a four chambered muscular pump. The chambers are the two atria and two ventricles. The two atria which are upper chambers, receive blood from the body and lungs. The ventricles are the lower chambers that pump blood out of the heart to the lungs and the rest of the body.

  • Your coronary heart is located in the front of your chest. It sits barely at the back of and to the left of your sternum (breastbone). Your ribcage protects your heart.

  • Your heart is barely at the left side of your frame. It sits among your proper and left lungs. The left lung is barely smaller to make room for the heart for your left chest.

  • Everyone’s heart is a barely exclusive length. Generally, adult hearts are about the same size as two clenched fists, and kids' hearts are approximately the same length as one clenched fist.

  • In common, a person's heart weighs about 10 ounces. Your heart can also weigh a touch extra or a bit less, relying in your frame size and sex.

The structure of the heart is relatively simple. It is made of four chambers: two upper atria and two lower ventricles. The heart also has four valves. The atrioventricular valves (AV) are between the atria and ventricles and the semilunar valves (SL) are between the ventricles and the arteries.

Heart walls

Your heart walls have three layers:

  • Endocardium: Inner layer.

  • Myocardium: Muscular middle layer.

  • Epicardium: Protective outer layer.

Heart chambers

  • Right atrium

  • Right ventricle

  • Left atrium

  • Left ventricle

Heart valves

  • Tricuspid valve

  • Mitral valve

  • Aortic valve

  • Pulmonary valve

Blood vessels

  • Arteries 

  • Veins 

  • Capillaries 

  • Left coronary artery

  • Circumflex artery

  • Left anterior descending artery (LAD)

  • Right coronary artery (RCA)

Electrical conduction system

  • Sinoatrial (SA) node

  • Atrioventricular (AV) node

  • Left bundle branch

  • Right bundle branch

  • Bundle of His

  • Purkinje fibers

What is the role of the heart in the human body?

The heart is responsible for the proper functioning of the human body. Without a functioning heart, the body cannot survive. The heart pumps blood throughout the body and helps to distribute oxygen and nutrients to all of the cells. The heart also helps to regulate the body’s blood pressure.

Your heart’s primary function is to move blood all through your body. Your heart also:

  • Controls the rhythm and speed of your heart rate.

  • Maintain your blood pressure.

The primary structures are:

  • Nervous system: Your anxious system helps manipulate your coronary heart fee. It sends indicators that tell your coronary heart to conquer slower in the course of relaxation and faster during strain.

  • Endocrine system: Your endocrine gadget sends out hormones. These hormones tell your blood vessels to constrict or relax, which influences your blood pressure. Hormones out of your thyroid gland also can inform your coronary heart to conquer faster or slower.

Heart disease

Heart disease is a leading cause of death worldwide. Although there have been some significant improvements in rates of heart disease in the developed world, they are still high enough to place considerable strain on health care systems and economies. The World Health Organization estimates that nearly 20% of global deaths (17 million annually) are due to cardiovascular diseases!

Heart disease is the number one killer in America. Studies have shown that up to 80% of all heart disease can be prevented through simple diet and lifestyle changes, such as getting enough sleep, exercising regularly, eating a healthy diet that includes lots of fruits and vegetables, reducing stress levels and more. The good news is that heart disease is extremely preventable if you are willing to make these small changes in your life. But the bad news is that heart disease continues to be an epidemic in America.

Heart disease is the leading cause of death in the United States. If you’re at risk for it, you may also have high blood pressure, a family history of heart disease or have experienced a previous heart attack. When your heart muscle gets damaged by atherosclerosis (hardening of the arteries), it loses its ability to pump oxygen-rich blood throughout your body.

Heart disease, or cardiovascular disease, is the leading cause of death in the United States and many other parts of the world. Heart disease is a condition that occurs when any part of the heart muscle is damaged due to a variety of factors. As arteries age and become clogged with plaque and cholesterol, heart disease becomes more likely. The result can be serious problems such as a heart attack or stroke. While there is no cure for heart disease, there are many treatments available to help prevent future heart disease.

Heart disease symptoms in women

Heart disease is the number one killer of women in the United States. It is important for women to learn about the symptoms of heart disease, so that they can get help quickly if they have any symptoms. Heart disease comes in many forms, and not all of them show up in the same way. However, there are some common signs of heart disease that will apply to most women who have it. Some common symptoms are:

Heart disease or cardiovascular disease is a generic term used to refer to all of the health problems that affect the heart, whether they are related to the heart’s structure or not. Heart disease can be described as any problem with your heart muscle, valves, blood vessels supplying blood and oxygen to your heart.

Heart disease is the leading cause of death for women in the United States, but symptoms are often different between men and women. Women are more likely to experience shortness of breath and extreme fatigue. These symptoms can also be signs of other conditions, so it’s important to see a doctor if you have had them for a few days.

Heart disease symptoms in men

and women If you suffer from angina pain, there are three different types of treatment that may help ease your symptoms.

Heart disease is the leading cause of death in men. Heart attacks and strokes are the two main causes of heart disease. These illnesses often have no symptoms until the onset is sudden, so early detection is important. If you experience any of these symptoms, which may be caused by heart problems, seek out medical attention immediately:

Heart disease is a common health problem that affects men as well as women. It is one of the leading causes of death in the United States, and doctors say that it is responsible for more than half of deaths among American men.

Heart disease causes

Heart disease is the leading cause of death in the United States, accounting for almost 40 percent of all U.S. deaths each year. The most common types are coronary artery disease and heart failure. Coronary artery disease occurs when one or more of the arteries that supply blood to your heart muscle (known as coronary arteries) become blocked by substances such as plaque, cholesterol, fat and calcium deposits. When this happens, your heart muscle doesn’t get enough oxygen-rich blood.

Heart disease is a major killer in many countries worldwide — but it can be prevented. The main risk factors include a lack of physical activity, unhealthy eating habits and smoking.

Heart disease is the number one killer in the United States, but what are its causes? We have the answer here.

What are some risk factors for heart disease

? For some time now, scientists have identified a number of risk factors for heart disease. Among them are diabetes, high blood pressure, smoking and alcohol consumption. Now they’ve come up with a list of 12 more: body mass index (BMI), sedentary lifestyle, less than ideal diet, physical inactivity, low socioeconomic status and heavy consumption of sugary drinks and red meat.

? Risk factors for heart disease include: · Smoking, · High blood pressure, · High cholesterol, · Obesity, and · Diabetes.

? Heart disease is the leading cause of death in the United States. Most people do not understand that heart disease can be prevented and even reversed with a healthy diet, exercise, and weight management. Most people also don’t realize that there are risk factors for heart disease that can be controlled through lifestyle changes. The biggest risk factor for heart disease is elevated cholesterol levels, but other factors include high blood pressure, tobacco use, diabetes and obesity. It’s important to understand this.

Heart disease dataset

Heart disease is the leading cause of death in the United States and many other countries. In the United States, it accounts for 17.3% of all deaths (about 611,000 per year). In this lesson, you will learn how to use a dataset containing heart disease information on over 100 million people to develop a model to predict if a person has heart disease or not.

Heart disease deaths

Heart disease deaths are projected to approach 1.5 million in 2021 from 1.4 million in 2015, a 6 percent increase. The number of deaths from heart disease, the leading cause of death in the United States, has steadily declined since peaking at nearly 2 million in the early 1990s. Deaths from heart disease have been declining for both men and women since then but men’s death rates have been declining faster than women’s resulting in an increasing gender gap over time.

Roughly speaking, heart disease is the top killer in almost all countries. In the United States, approximately 610,000 people die of heart disease each year—that’s about one in every four deaths. Another 785,000 Americans die of stroke and coronary artery disease each year. That works out to 1 in every 6 deaths being attributable to these conditions. Worldwide, it’s estimated that 25 million people die from CVD annually (i.e., 10%.

Heart disease is the leading cause of death in the US, accounting for 7 out of 10 deaths. Despite this, heart disease remains highly preventable and treatable by following a healthy lifestyle. According to statistics released by the American Heart Association (AHA), almost half of all Americans have one or more risk factors that could potentially lead to a heart problem. The AHA estimates that approximately 610,000 people die from heart disease each year and another 785,000 suffer from a stroke.

Heart disease treatment

If you or a loved one is suffering from heart disease, then it’s important to learn about the different treatment options that are available. There are some common treatments for heart disease, and many of them can be performed at home with little to no input from doctors or medical professionals.

Heart disease treatment is a common problem for millions of people in the country. The leading cause of death in the United States, heart disease is a serious condition that affects the heart and blood vessels around it. It is important to understand what this condition is, how to recognize symptoms and signs, and how to treat it.

Heart disease is a serious and widespread problem, but it can be treated if caught soon enough. The earlier a patient can receive treatment for heart disease, the better the outcome. As patients often suffer from this condition before they have any symptoms, it may be important to know some of the warning signs.

Common heart conditions

What’s the first thing that comes to mind when you hear “heart condition?” Probably not something that sounds good, right? Well, heart conditions are actually quite common. In fact, more than 20 percent of adults in the United States have some sort of heart condition. The most common types include:

If you’re concerned about your heart health, it helps to learn more about the conditions you should be looking for. Here are some things to keep an eye out for:

Heart disease is the leading cause of death in the United States, accounting for one out of every four deaths. Yet, a lot of these deaths are preventable if you know about some common heart conditions and how to prevent them. Here’s what you need to know.

Inherited heart conditions

Inherited heart conditions are relatively common, and they can lead to a shorter life expectancy than the average person. They can also lead to sudden cardiac arrest, which means that someone living with an inherited heart condition is more likely to die from cardiac arrest than from any other cause. This article will look at what you should know about these conditions and how you can treat them.

There are several conditions that can affect both the structure and function of your heart, potentially putting you at risk for a heart attack or stroke. Some of these conditions are genetic and can be passed down from parent to child; other conditions are acquired, such as those caused by lifestyle factors such as smoking.

My father died of a heart attack, at age 60. His father had died of a heart attack at the same age. And my grandfather's brother had died of one at the same age as well.

Coronary heart disease

Coronary heart disease (CHD) is a condition in which plaque builds up inside the coronary arteries, the blood vessels that supply oxygen-rich blood to your heart. It’s a serious medical condition – if untreated, it can lead to a heart attack or other life-threatening complications. However, CHD can be treated with medication and lifestyle changes such as diet and exercise.

Coronary heart disease (CHD), also known as coronary artery disease, is a condition in which plaque builds up inside the coronary arteries. This process is called atherosclerosis. Over time, this plaque buildup can reduce blood flow to parts of your heart muscle. This can cause chest pain and lead to a heart attack if it occurs in the area of your heart that supplies blood to your body. Coronary heart disease is the most common type of cardiovascular disease, accounting for about.

is the leading cause of death in America. Coronary heart disease (CHD) is the leading cause of death in America.1 Every year, nearly 850,000 Americans have a new or recurrent CHD event (myocardial infarction or coronary revascularization), and about 610,000 die from CHD.2 In 2017, about 785,000 people will die from CHD: 596,000 men and 189,000 women.2 The risk for.

Unstable angina

Unstable angina is a variant of angina that is typically precipitated by physical or emotional stress. The pain is often described as more intense than the typical chest pain and may radiate to the shoulders or arms. The pattern, duration and severity are unpredictable, unlike stable angina. It occurs with less exertion and does not improve with rest; unstable angina can be associated with nausea and sweating.

Unstable angina, also known as Prinzmetal's angina, is a variant of angina pectoris. Angina is chest pain or discomfort caused by an insufficient blood supply to the heart muscle. Unstable angina occurs when these attacks are not related to exertion, but may be triggered by emotional stress, smoking tobacco or other habits that cause coughing and temporary spasm of the coronary arteries. Unlike stable angina, the pain from unstable angina often occurs at rest.

Unstable angina refers to the unstable nature of symptoms that occur during an acute coronary syndrome. Unstable angina is a subtype of non-ST elevation myocardial infarction. It is characterized by ongoing chest pain with increased frequency, duration, and intensity than previously experienced by the patient.[1] Stable angina occurs when chest pain has been present for at least 20 minutes and then resolves within 1 hour after onset.

Heart attack

A heart attack occurs when the blood supply to an area of the heart is seriously reduced or cut off. This can damage or even kill part of the affected heart muscle and lead to a serious decrease in blood flow to other parts of the body.

Heart attack symptoms can vary from person to person. Some people may have mild symptoms that go unnoticed, while others may experience severe chest pain. It’s important to recognize the signs of a heart attack and seek immediate medical attention. Although heart attacks are more common in men than women, women do get them, too, and should know what to look for. Here are some of the most common heart attack symptoms:Chest pain that lasts longer than a few minutes or goes away and.

The heart attack is an acute myocardial infarction (MI), which is a sudden disruption of the blood supply to part of the heart muscle that results in cell death due to oxygen deprivation. This may be due to blockage of a coronary artery by atheroma. The resulting shortage of oxygenated blood and nutrients causes damage or death to some cardiac muscle cells, which are replaced by scar tissue.

Valve disease

The most frequent cause of death in all forms of the disease is uncontrolled bleeding, which can lead to hypovolemic shock and death. In some cases it has been suggested that anticoagulant therapy may be effective in prolonging survival.

Valve disease is a rare congenital heart defect (meaning it is present from birth) that affects the valves in the heart. The condition can be life-threatening if not treated, but most children with valve disease require only one surgery done early in infancy followed by lifelong monitoring. Valve disease occurs when some of the heart valves do not develop properly or are blocked, which restricts blood flow through the body. The abnormal valve openings may allow blood to leak back into the heart and prevent forward blood.

Valve disease is a degenerative heart condition that typically affects people over the age of 50. The valves of the heart are responsible for directing blood flow from one part of the heart to another and back again. Valve disease interferes with this process, causing blood to leak instead of flowing normally. This can lead to serious complications and even death if left untreated.

Heart failure

Heart failure is a class of cardiovascular disease in which the heart muscle is unable to pump enough blood to maintain an adequate blood circulation. Heart failure may also be described as “congestive heart failure” (CHF) if it has progressed to a point where the heart can no longer maintain normal flow. Heart failure occurs when the myocardium (the muscular wall of the heart) can no longer pump enough blood to meet the needs of the body. This results in symptoms such as.

can cause heart attack Heart failure can cause heart attack. Heart disease is a condition in which the heart cannot pump enough blood to provide adequate oxygen to the body. Heart failure is another term for congestive heart failure, in which the heart muscle has been weakened and can’t maintain an adequate blood flow. The weakening can be caused by coronary artery disease, valvular disease or cardiomyopathy (a form of muscular dystrophy). Some forms of heart failure can mimic symptoms.

Heart failure is a condition in which the heart cannot pump blood through the body at a rate sufficient to meet its metabolic demands. Heart failure can be caused by any structural or functional cardiac disorder that impairs the ability of the ventricles to contract with sufficient force, or to relax properly between beats.

Congenital heart conditions

A congenital heart defect (CHD) is any problem with the structure of the heart or major blood vessels that is present at birth, when a baby is born. A CHD may be found on ultrasound or by looking at the baby’s physical appearance, but not all babies have symptoms of a heart problem at birth. Some CHDs are minor and don’t need to be treated for many years, whereas others are more serious and require surgery soon after birth. Young-

Congenital heart conditions are abnormalities in the structure of the heart or a congenital heart defect that is present at birth. This can range from something as minor as a simple hole between chambers in the heart to something as major as an atrial septal defect. Congenital means the abnormality was present at birth and will affect every organ system in your body. Heart defects are more common than many people realize; they’re diagnosed in 1 out of every 100 babies born.

Congenital heart conditions are birth defects in which the chambers and/or valves of the heart do not form properly. They are very common in newborn babies, affecting about 7 of every 1000 infants. The most common type of congenital heart defect is atrial septal defect (ASD), where there is a hole between the left and right atria, or upper chambers of the heart. This results in an abnormal flow of blood into the lungs.

What affects the health of the heart in the human body?

There are many things that can affect the health of the human heart. These include lifestyle choices, such as diet and exercise, as well as medical conditions. Some medical conditions that can affect the heart include high blood pressure, high cholesterol, and diabetes. Making healthy lifestyle choices can help to prevent these medical conditions from developing, and can also help to improve the health of the heart if these conditions are already present..

Common conditions that affect your coronary heart encompass:

  • Atrial fibrillation (Afib): Irregular electric impulses for your atrium.

  • Arrhythmia: A heartbeat that is too speedy, too slow or beats with an irregular rhythm.

  • Cardiomyopathy: Unusual thickening, enlargement or stiffening of your coronary heart muscle.

  • Congestive heart failure: When your heart is too stiff or too susceptible to correctly pump blood at some point of your body.

  • Coronary artery disease: Plaque buildup that results in slim coronary arteries.

  • Heart assault (myocardial infarction): A surprising coronary artery blockage that cuts off oxygen to part of your heart muscle.

  • Pericarditis: Inflammation for your coronary heart’s lining (pericardium).

Maintaining heart health in the human body

  1. Though often overlooked, heart health is a critical element of maintaining human health. The heart is responsible for pumping blood throughout the body, which delivers oxygen and nutrients to the cells and removes waste products. Therefore, it is essential to keep the heart functioning properly. Unfortunately, many people do not realize the importance of heart health until they experience a heart attack or other heart-related problem.

  2. A healthy heart is essential to a human’s overall health. The heart is a muscle that pumps blood throughout the body, and it needs to be strong and healthy to do its job properly. There are many things that people can do to keep their hearts healthy, such as eating a healthy diet, exercising regularly, and not smoking. By taking care of their heart, people can help to ensure that they will be healthy overall.

  3. Heart disease is the leading cause of death for men and women in the United States. Every year, about 610,000 people die of heart disease in the United States. That’s 1 in every 4 deaths. Heart disease is a term that covers a range of conditions affecting the heart.

  4. According to the World Health Organization (WHO), cardiovascular disease (CVD) is the number one cause of death globally: more than 17.3 million people died from CVDs in 2008, representing 30% of all global deaths. Of these deaths, an estimated 7.3 million were due to coronary heart disease and 6.2 million were due to stroke. As the world’s population ages, the prevalence of CVD is expected to rise. The WHO projects that by 2030, almost 23.6 million people will die from CVDs, representing an increase of about 31% from 2008.

You also can make way of life modifications to maintain your coronary heart health. You may additionally:


  • Achieve and keep a healthful weight on your sex and age.

  • Drink alcohol carefully.

  • Eat a heart-healthy food regimen with masses of end result, veggies and complete grains.

  • Exercise reasonably for at least 150 minutes according to the week.

  • Limit your sodium consumption.

  • Manage your strain with healthful techniques like meditation or journaling.

  • Quit smoking and/or the usage of tobacco merchandise and avoid secondhand smoke.

Heart transplantation 

Heart transplantation is the replacement of a diseased heart with a healthy one from another human being.The procedure involves the extraction of a patient’s damaged heart, followed by placement of the donor organ in its place and connecting it to blood vessels and other bodily systems.The first successful human-to-human heart transplant occurred in South Africa in 1967, though this and all subsequent transplants were performed with organs donated by people who had just died.

Heart : structure of the heart - role of the heart in the human body

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