Question

explain the structure of heart in brief with diagram ​

Answer 1

there are two circulatory system

1)pulmonary circulation

2)systematic circulation

1)it begins from the right ventricle which expels the blood into pulmonary trunk. The blood flowing into the vascular system of the lungs, becomes oxygenated and return to the heart through pulmonary veins.

2)this circulation starts from the left ventricle which sends the blood into the aorta. from there deoxgenated blood is collected by venules which join to form veins and finally vena cava and pour blood back into the right auricle of heart