Question

the lower chambers of the heart are called the... ventricle artery vesticle atrium

Explanation:

The heart has four chambers. The upper chambers are called atria, and the lower chambers are called ventricles. An artery is a blood vessel that carries blood away from the heart. "Vesticle" is not a correct anatomical term related to the heart. So the correct answer is ventricle.

Answer:

A. ventricle