Question

9. "Heart of heart is called
a) SA node
b) AV node
c) Purkinje fibres
d) Bundle of His

unwanted answers will be reported​

Answer 1

Explanation:

Heart Chambers, Valves, Vessels, Wall and Conduction System

The heart is made up of four chambers. The upper two chambers are called atria (singular: atrium) and the lower two are known as ventricles (singular: ventricle).

Answer 2

a) SA node.

It is called heart of heart.