AP BIOLOGY

ANIMAL PHYSIOLOGY

HUMAN CIRCULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not true about the heart? ____ . (Mutiara)
A
the heart stops pumping blood to all parts of the body
B
the heart sounds when the heart valve opens and closes
C
the heart functions to pump blood
D
the heart has strong muscles
Explanation: 

Detailed explanation-1: -The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.

Detailed explanation-2: -Expert-Verified Answer It is hollow so that it can fill with the blood. Muscles are responsible for beating i.e. contraction and relaxation of heart, which helps in movement of blood.

There is 1 question to complete.