Question 1
Which valves open to allow the ventricles to fill?
◦ Aortic and mitral
◦ Tricuspid and mitral
◦ Tricuspid and pulmonic
◦ Aortic and pulmonic
Question 2
The inferior vena cava returns deoxygenated blood to the heart from
◦ the lower extremities and abdomen.
◦ the head and neck.
◦ the coronary circulation.
◦ none of these—the vena cava carries oxygenated blood.