Question

explain mechanism of circulation of heart​

Answer 1

Answer:

Deoxygenated blood is collected from the body and poured to the right Atrium via the Vena cava.

Now the deoxygenated blood moves from the right Atrium to right ventricle through tricuspid valve.

Again the deoxygenated blood is pumped right ventricle through the Pulmonary artery to the lungs and the oxygenated blood returns from the lungs via Pulmonary vein to the left Atrium and then to left ventricle through the mitral valve.

Now the left ventricle forcefully pushes the oxygenated blood out through the the systemic aorta to the whole body which then returns to the heart as deoxygenated blood via the Vena cava and and the cycle continues

Answer 2

Answer:

Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve