ANATOMY

GENERAL ANATOMY

CARDIOVASCULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the main function of valves in the circulatory system?
A
To pump blood throughout the body
B
To prevent blood from moving in the wrong direction
C
To prevent platelets from clotting the blood
D
To keep the body stable
Explanation: 

Detailed explanation-1: -Heart valves control the flow of blood so that it moves in the right direction. The valves prevent blood from flowing backward. The heart has four valves. The tricuspid valve separates the right atrium and right ventricle.

Detailed explanation-2: -The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart). They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.

Detailed explanation-3: -The flow of blood needs to be in one direction in order to prevent the combining of oxygenated and deoxygenated blood. The valves consist of cusps that fold in the direction of blood flow. The valves close the cusps and prevent the blood from flowing in the reverse direction.

Detailed explanation-4: -Valves ensure the correct direction of blood flow. The tricuspid and bicuspid valves prevent blood from flowing backwards from the ventricles to the atria during ventricular contraction.

Detailed explanation-5: -Your mitral valve opens to send blood from your left atrium to your left ventricle. When your left ventricle is full it squeezes, which closes your mitral valve and opens your aortic valve. Your heart sends blood through your aortic valve to your aorta, where it flows to the rest of your body.

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