Heart is what type of organ

Veins : These carry deoxygenated blood back to the heart, and they increase in size as they get closer to the heart. Veins have thinner walls than arteries. Capillaries : These connect the smallest arteries to the smallest veins.

They have very thin walls, which allow them to exchange compounds such as carbon dioxide, water, oxygen, waste, and nutrients with surrounding tissues.

The heart, blood, and blood vessels make up the circulatory, or cardiovascular, system. Here, learn about some diseases that can affect this system. The heart is essential to life — if it stops beating, blood will not reach the brain and other organs, and the person can die within minutes. This is called cardiac arrest.

If a person experiences cardiac arrest, they will be unable to speak or breathe, and they will have no heartbeat. The heart is an essential, powerful organ that constantly pumps oxygen and nutrients around the body. Here, learn about preventing and treating different types of heart disease.

If the heart stops, a person cannot survive for long. Staying active and maintaining a healthful diet are two ways to protect the heart. Learn about foods for a healthy heart here. What are the breasts? Read on to learn more about the breasts, in males and females, including their functions, structures, and how to check for…. What is the male reproductive system and how does it work? Read on to learn more about the function and anatomy of the external and internal male….

The cardiovascular system, also known to some as the circulatory system, consists of the heart, blood vessels, and blood. Learn more about it here. The transverse colon is the longest and most mobile section of the colon. Find out more about its function and conditions that affect it. The subcutaneous layer, or hypodermis, is the deepest layer of tissue in the skin.

It consists mostly of fat, keeping the body warm. The heart: All you need to know. Medically reviewed by Dr. Payal Kohli, M. Anatomy How it works Valves Electrical system Blood vessels Cardiac arrest Summary The human heart is a finely-tuned instrument that serves the whole body. Possible symptoms of acute hypertension include sweating and….

Heart attack and heart failure share many of the same risk factors and underlying health conditions. Learn about the many differences between heart…. Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Experts say there are a number of ways to make it easier to go to bed at a proper time, including when you exercise and when you eat.

Left bundle branch block is a condition in which there's slowing along the electrical pathway to your heart's left ventricle. Ejection fraction is a test that's used to determine the percentage of blood that leaves your left ventricle each time your heart beats. A new study of over 2. Experts say middle-aged people with iron deficiency have a higher risk of heart disease later.

You can increase iron levels with diet and supplements. Pulse oximetry can estimate the levels of oxygen in your blood. Find out how a pulse oximetry test works, what it's used for, and what the readings…. Health Conditions Discover Plan Connect. Is the Heart a Muscle or an Organ? Medically reviewed by Gerhard Whitworth, R. Heart anatomy What the heart does Heart conditions Lifestyle tips Bottom line Have you ever wondered whether your heart is a muscle or an organ?

Well, this is kind of a trick question. Your heart is actually a muscular organ. Anatomy of the heart. What the heart does. Conditions that affect the heart. Tips for heart-healthy living. The bottom line. Read this next. Hypertensive Heart Disease. Medically reviewed by University of Illinois. The picture of health, an angiogram of a human heart shows blood vessels in sharp detail. To take an angiogram, or arteriogram x-ray, doctors must first inject the patient with a special opaque dye that allows a clear view of the heart's blood vessels, including the large left and right coronary arteries.

Narrowed arteries indicate the presence of coronary artery disease. Blockages of either of the coronary arteries could lead to a heart attack. Such x-rays help doctors determine a course of treatment. All rights reserved.

Function About the size of its owner's clenched fist, the organ sits in the middle of the chest, behind the breastbone and between the lungs , in a moistened chamber that is protected all round by the rib cage. Blood Delivery Since the heart lies at the center of the blood delivery system, it is also central to life. Angiogram of Healthy Heart The picture of health, an angiogram of a human heart shows blood vessels in sharp detail. Share Tweet Email.

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