MEDICAL PHYSIOLOGY

PHYSIOLOGY

CARDIOVASCULAR PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the direction of blood flow in the circulatory system?
A
lungs, body, heart, body
B
body, lungs, heart, body
C
heart, lungs, heart, body
D
heart, body, lungs, body
Explanation: 

Detailed explanation-1: -Blood comes into the right atrium 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.

Detailed explanation-2: -The blood first enters the right atrium from the superior and inferior vena cava. It then flows through the tricuspid valve into the right ventricle. The blood then moves through the pulmonary valve into the pulmonary artery. The pulmonary artery carries blood to the lungs where it takes up oxygen.

Detailed explanation-3: -Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.

There is 1 question to complete.