The heart contracts and expands like a ..... to circulate blood throughout the body.

CARDIOVASCULAR PHYSIOLOGY

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The heart contracts and expands like a ____ to circulate blood throughout the body.

A	gear
B	pully
C	lever
D	pump

Explanation:

Detailed explanation-1: -The heart is a pump that sends the blood circulating through our body. The pumping action takes place when the left ventricle of the heart contracts. This forces the blood out into the arteries, which expands to receive the oncoming blood.

Detailed explanation-2: -The heart pumps blood by expanding and then contracting, first taking in blood and then pushing it through the circulatory system. During each beat of the heart, the ventricles relax, expanding their volume to collect blood from the atria.

Detailed explanation-3: -Heart, a muscular organ that pumps blood throughout your body. Blood vessels, which include your arteries, veins and capillaries.

There is 1 question to complete.