Question

what is heart????? explain​

Answer 1

Answer:

Heart: The muscle that pumps blood received from veins into arteries throughout the body. ... Two-thirds of the heart lies in the left side of the chest, with the balance in the right side of the chest.29 मार्च 2021

Answer 2

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• Heart is a hollow, muscular organ present in between two lungs in the thoraric cavity. It's size is about one's fist. It is 12 cm long and 6 cm wide. It's weight in male is 300 gm and 250 gm in female.

• A human heart is four chambered. Two upper; smaller chambers called atria and the lower; longer chambers called ventricle.

• The atrium and ventricle of the same side are separated by atrio-ventricular septum.

• Atrial septum separates the left and right atria. Inter ventricular septum separates the left and right ventricles.

• The opening between right atrium and ventricle is guarded by a valve called Tricupsid valve.And the opening between left atrium and ventricle is guarded by a Bicuspid valve.

• Valves prevent the backward flow of blood and allow the blood to flow in one direction only.

• It's main function is pumping the blood.

• It contains two types of blood i.e. Oxygenated and Deoxygenated.

1. Oxygenated is send to all parts of the body.
2. Deoxygenated is send to lungs to purify it.