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CBSE Class 7 Answered

Good morning mam In the chapter transportation of materials in plants and animals I have a doubt, the heart pumps blood through arteries at High pressure and in veins at low pressure what about capillaries ma'am ?
Asked by Ganesamoorthy | 21 Jan, 2021, 01:57: PM
answered-by-expert Expert Answer
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. In the lungs, capillaries absorb oxygen from inhaled air into the bloodstream and release carbon dioxide for exhalation. Elsewhere in the body, oxygen and other nutrients diffuse from blood in the capillaries to the tissues they supply. The capillaries absorb carbon dioxide and other waste products from the tissues and then flow the deoxygenated blood into the veins.
Answered by Sheetal Kolte | 22 Jan, 2021, 11:53: AM

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