Question

The heart chambers are separated by a thick wall is called​

Answer 1

Answer:

Explanation:

The heart is divided into four chambers. The two upper chambers are called the atria. The right atrium and left atrium are separated by a wall of tissue called the atrial septum. The two lower chambers are called the ventricles, and are separated into the right and left ventricle by the ventricular septum.

Answer 2

it is separated by atrial septum