PATHOLOGY

PATHOLOGY MCQ

HEART

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What parts act like doors that control blood flow in the heart?
A
valves
B
heart dams
C
kidneys
D
chambers
Explanation: 

Detailed explanation-1: -The valves prevent the backward flow of blood. Valves are actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle. Normal valves have 3 flaps (leaflets), except the mitral valve. It only has 2 flaps.

Detailed explanation-2: -The tricuspid valve regulates blood flow between the right atrium and right ventricle. The pulmonary valve controls blood flow from the right ventricle into the pulmonary arteries, which carry blood to your lungs to pick up oxygen.

Detailed explanation-3: -Your heart valves control the direction of your blood flow. They have very small flaps of skin called leaflets (sometimes called cusps) that open and close like doors with every heartbeat. They stop the blood flowing backwards.

Detailed explanation-4: -These valves ensure that blood flows in only one direction, preventing backflow. The tricuspid valve is situated between the right atrium and right ventricle. The pulmonary valve is between the right ventricle and the pulmonary artery. The mitral valve is between the left atrium and left ventricle.

There is 1 question to complete.