Question

Explain about human heart. ​

Answer 1

the heart is the muscular organ in humans which pumps blood through the blood vessels of the circulatory system

Answer 2

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The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.

"The tissues of the body need a constant supply of nutrition in order to be active," said Dr. Lawrence Phillips, a cardiologist at NYU Langone Medical Center in New York. "If [the heart] is not able to supply blood to the organs and tissues, they'll die."

°•○●□Human heart anatomy□●○•°

In humans, the heart is roughly the size of a large fist and weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women, according to Henry Gray's "Anatomy of the Human Body."

The physiology of the heart basically comes down to "structure, electricity and plumbing," Phillips told Live Science.

《■♡♢♧Human heart function♧♢♡■》

The heart circulates blood through two pathways: the pulmonary circuit and the systemic circuit.

In the pulmonary circuit, deoxygenated blood leaves the right ventricle of the heart via the pulmonary artery and travels to the lungs, then returns as oxygenated blood to the left atrium of the heart via the pulmonary vein.

In the systemic circuit, oxygenated blood leaves the body via the left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen. Deoxygenated blood returns via veins to the venae cavae, re-entering the heart's right atrium.

《*^*Facts about the human heart*^*》

●A human heart is roughly the size of a large fist.

●The heart weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women.

●The heart beats about 100,000 times per day (about 3 billion beats in a lifetime).

●An adult heart beats about 60 to 80 times per minute.

●Newborns' hearts beat faster than adult hearts, about 70 to 190 beats per minute.

●The heart pumps about 6 quarts (5.7 liters) of blood throughout the body.

The heart is located in the center of the chest, usually pointing slightly left.

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