Explain the types of blood circulation.

Explanation

The blood circulates in our body as oxygenated and deoxygenated blood. The types of circulation are:
(i) Systemic Circulation: Circulation of oxygenated blood from the left ventricle of the heart to various organs of the body and return of deoxygenated blood to the right atrium. Aorta carries oxygenated blood to all the organs of the body. (ii) Pulmonary Circulation: The path of pulmonary circulation starts in the right ventricle. Pulmonary artery arises from the right ventricle and reaches the lungs with deoxygenated blood. Pulmonary veins collect the oxygenated blood from the lungs and supplies it to the left atrium of the heart.
(iii) Coronary circulation: The supply of blood to the heart muscles (cardiac muscles) is called as coronary circulation. Cardiac muscles receive oxygenated blood from coronary arteries, that originate from the aortic arch. Deoxygenated blood from the cardiac muscles, drains into the right atrium by the coronary sinuses. In human, the blood circulates twice, through the heart in one complete cycle, called double circulation. The oxygenated blood do not mix with the deoxygenated blood.