Question

Heart of heart is called ____
___

Answer 1

The upper two chambers are called atria (singular: atrium) and the lower two are known as ventricles (singular: ventricle). Muscular walls, called septa or septum, divide the heart into two sides. On the right side of the heart, the right atrium and ventricle work to pump oxygen-poor blood to the lungs..

$\huge\mathfrak{radhe\:radhe}$

Answer 2

Answer:

what is the heart of the heart?