Question

Define double circulation...??@HA9650...
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Answer 1

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The oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body by the heart. Thus, the blood passes twice through the heart making one complete round through the body. This is called double circulation.

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Answer 2

Answer:

double circulation can be studied as pulmunary circulation ans systemic circulation

blood in the body flows through heart twice in one cycle

pulmunary cycle vena cava drains deoxygenated blood into right atrium and blood pumped into right ventricle through tricupsid valve

from right ventricle blood is pumped to lungs for oxygenation through pulmunary artery

this completes pulmunary circulation

Note : most arteries carry oxygenated blood except pulmunary artery which carry deoxygenated blood.

systemic cycle : blood from lungs drained into left atrium by pulmunary vein.

from left atrium blood is pumpen into left ventricle from which it is pumped to whole body through systemic aorta.

this completes Systemic cycle

Note : veins carry deoxygenated blood except for pulmunary vein which carry oxygenated blood from lungs to left atrium.

hope it helps