Question

the left upper portion of the heart is called ​

Answer 1

Explanation:

The upper chambers are called the left and right atria,

and the lower chambers are called the left and right ventricles.

A wall of muscle called the septum separates the left and right atria and the left and right ventricles.

The left ventricle is the largest and strongest chamber in your heart.

Answer 2

ventricle

The left ventricle is the largest and strongest chamber in your heart.