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- The heart is a crucial organ that functions as the body's pump, ensuring blood circulation throughout the body. It consists of four main chambers: Left and right atria (upper chambers) Left and right ventricles (lower chambers)
www.verywellhealth.com/heart-anatomy-8654202
Jan 26, 2024 · What is the function of the heart? Your heart’s main function is to move blood throughout your body. Blood brings oxygen and nutrients to your cells. It also takes away carbon dioxide and other waste so other organs can dispose of them. Your heart also: Controls the rhythm and speed of your heart rate. Maintains your blood pressure.
Sep 30, 2020 · Here, learn about the structure of the heart, what each part does, and how it works to support the body. We also explore the electrical impulses and the role of CPR.
Jul 30, 2021 · The cardiovascular system consists of the heart, blood vessels, and blood. Its primary function is to transport nutrients and oxygen-rich blood to all parts of the body and to carry...
- Myocardium. Myocardium is the contractile muscle layer which performs the mechanical action of pumping blood into the body. It is a muscle that functions involuntarily, that is, without the need for a nervous impulse coming from the nervous system.
- Endocardium. The endocardium is the lining of the different chambers of the heart. It consists mainly of endothelial cells, similar to the rest of the blood vessels, as well as a layer of lax connective tissue.
- Pericardium. The pericardium is a fibrous membrane that surrounds the heart and the great blood vessels that connect to it, as isolation and protection.
- Right Auricle. The right atrium is the cavity in the upper-right part of the heart, above the right ventricle. It is reached by the superior vena cava and the inferior vena cava.
Oct 31, 2024 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds.
- The Editors of Encyclopaedia Britannica
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
Nov 10, 2024 · The heart is a four-chambered muscular organ with a complex structure that allows it to efficiently pump blood throughout the body. It is divided into two halves—the right and left sides—each responsible for different aspects of circulation. The heart consists of four chambers: the right atrium, right ventricle, left atrium, and left ventricle.
Jun 6, 2023 · The heart provides the body’s organs and tissues with a constant supply of blood – and with it vital oxygen and nutrients. You can think of the heart as a central pump that keeps the blood circulating around the body. At rest, an adult heart beats about 60 to 80 times a minute. Each time the heart beats it pumps blood through the body.
