explain how blood is oxygenated and circulated in our body. class 7
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Explanation:
Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.
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Blood is oxygenated by lungs and circulated to all body with the help of pumping organ called heart .
Explaination:
1. Deoxygenated blood is pump by heart to lungs with the help of artery.
2. In lungs deoxygenated blood is purified and convert into oxygenated blood which is reached to heart through pulmonary vein.
3.This oxygenated blood reach the left ventricle from where it is circulated to whole body through arteries and capillaries.
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