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Oct 4, 2019 · The heart is one of the most vital and delicate organs in the body. If it does not function properly, all other organs – including the brain – begin to die from lack of oxygen within just a few minutes. As of 2009, the most common cause of death in the world was heart disease.
Feb 27, 2019 · Each day, the average human heart beats about 100,000 times, pumping 2,000 gallons of blood through the body. That's a lot of work for an organ no bigger than a large fist and weighing 8 to 12 ounces.
[4] In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. [5][6] Commonly, the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. [7] .
The heart has four chambers: the left and right atriums and the left and right ventricles. They form a shallow groove at the line of their junction, which form the atrioventricular groove. The atrioventricular groove hosts major coronary arteries while they travel along to the line of attachment of atrioventricular valves.
Jul 27, 2022 · The human heart is an organ that pumps blood throughout the body via the vessels of the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other...
Oct 31, 2024 · In humans it is situated between the two lungs and slightly to the left of centre, behind the breastbone; it rests on the diaphragm, the muscular partition between the chest and the abdominal cavity. The heart consists of several layers of a tough muscular wall, the myocardium.
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Nov 10, 2024 · Last updated on November 10, 2024. The heart is a muscular organ that pumps blood throughout the body via the circulatory system. It is approximately the size of a fist and consists of four chambers: two atria and two ventricles. The heart is composed of specialized muscle tissue, known as myocardium, and is encased within a double-layered ...
