Write blood circulation process in human body

Blood comes into the right atritum from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. after picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta

i believe the answer would be 1975.

hope this