THORAX ABDOMEN AND PELVIS

MEDICAL

HEART AND PERICARDIUM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The main function/purpose of heart valves is to:
A
Only create sound so you can hear the heartbeat
B
Allow blood to flow freely back and forth between chambers
C
Prevent backflow of blood
D
They do not serve a purpose
Explanation: 

Detailed explanation-1: -Separates the right ventricle from the pulmonary artery. Opens to allow blood to be pumped from the right ventricle to the lungs (through the pulmonary artery) where it will receive oxygen. Prevents the back flow of blood from the pulmonary artery to the right ventricle.

Detailed explanation-2: -The semilunar valves permit blood to flow into the arteries from the ventricles and prevent the backward flow of blood from the arteries into the ventricles. The semilunar valves are made up of connective tissue and a thin smooth membrane known as the endocardium.

Detailed explanation-3: -Tricuspid valve: This valve has three leaflets. They allow blood to flow from the right atrium to the right ventricle. They also prevent blood from flowing backward from the right ventricle to the right atrium.

There is 1 question to complete.