MICROANATOMY

BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS

CARDIOVASCULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The purpose of valves in the heart is to
A
push blood through the chambers
B
prevent backflow of blood
C
allow of anaerobic respiration
D
removal of toxins
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.

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: -Aortic valve: Allows blood to pass from the left ventricle to the aorta; prevents backflow of blood into the left ventricle.

Detailed explanation-4: -The regular opening and closing of valves prevents backflow (blood that is flowing in reverse-also called venous reflux or insufficiency). If backflow occurs, blood can begin to pool in the veins, potentially damaging them.

Detailed explanation-5: -Regurgitation is blood flow in the opposite direction from normal, as the backward flowing of blood into the heart or between heart chambers. It is the circulatory equivalent of backflow in engineered systems. It is sometimes called reflux.

There is 1 question to complete.