Question

Correct cyclic sequence of flow of blood in double circulation

Answer 1

Blood from Superior and inferior vena cava flows into right atrium blood from pulmonary veins flows in to left atrium.This contraction lasts for few seconds.Blood is foced through the tricuspid and bicuspid valves into ventricles

Answer 2

Hello

The deoxygenated blood from the body enters the right atrium of the heart through vena cava ------> through a valve it flows to the right ventricle ------> from right ventricle it goes to the lungs through pulmonary artery ---------> from lung oxygenated blood enters left atrium through pulmonary vein ---------> through another valve the blood flows to left ventricle-------> from left ventricle the blood is pumped to the whole body through aorta.

This process is called double circulation as blood enters the heart twice.

Hope this helps

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