The primary function of the heart is:
a. transferring oxygen to the cells.
b. pumping blood throughout the body.
c. oxygenating blood in the lungs.
d. maintaining the volume of blood.
Question 2
Which of the following structures brings oxygen-depleted blood to the right atrium?
a. The right ventricle
b. The pulmonary artery
c. The vena cavae
d. The aorta