Question

explain the circulation blood in humans.

Answer 1

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The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for eachcirculation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium, left ventricle, right atrium and right ventricle.

Answer 2

Answer:

The regular contraction and relaxation of the heart help to circulate blood in the blood.

• The pulmonary vein carries oxygenated blood from the lungs to the left atrium of the heart.
• When the left auricle contacts, the oxygenated blood goes into the left ventricle.
• On contraction of the left ventricle the oxygenated blood is pumped into the main artery called aorta, which branches into many arteries.
• These arteries supply oxygenated blood to all organs of the body ( except the lungs ) . Aorta is the largest artery in the human body.
• Carbon dioxide, which is produced by the cells as waste, enters the blood through capillaries which join the veins. The veins carry deoxygenated, carbon dioxide rich blood to the heart. This deoxygenated blood enters the right auricle.
• When the right auricle contract, the deoxygenated blood goes to the right ventricle. On contraction on the right ventricle, deoxygenated blood goes to the lungs through pulmonary artery.
• The blood absorbs fresh oxygen from the air we breath in and becomes oxygenated in the lungs and the cycle is repeated.

Explanation:

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