The atria of the heart
A) are separated from each other by the interventricular septum.
B) function primarily as reservoirs for blood collection.
C) function primarily as the pumps of the heart.
D) receive blood from the aorta and pulmonary trunk.
E) have all of these characteristics.

Question

Quizplus · Accepted Answer

The atria of the heart function primarily as reservoirs for blood collection, receiving blood from the venae cavae and pulmonary veins before sending it to the ventricles for pumping. They are separated from each other by the interatrial septum, not the interventricular septum which separates the ventricles. Therefore, options A and C are incorrect. Option D is also incorrect as it is the aorta and pulmonary trunk that receive blood from the left and right ventricles respectively, not the other way around.

The Atria of the Heart