Question

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

Explanation:

The heart has four chambers. The upper chambers are the atria (singular: atrium), and the lower chambers are the ventricles. An artery is a blood vessel that carries blood away from the heart. "Vesticle" is likely a misspelling (perhaps intended as "vesicle", which is a small structure in a cell). So, the correct answer is ventricle.

Answer:

ventricle