Question

ventricular contraction is in command of​

Answer 1

Answer:

The electrical conduction of heart beat occurs according to the following events:

• The sinoatrial node sends out an electrical impulse that stimulates contraction of the myocardium (heart muscle tissue).
• The Bundle of his innervates nerve fibres(Purkinji fibres) in the ventricular wall, causing ventricular contraction.

Hop you understand.....

Answer 2

Ventricular contraction is in command of the SA node.

• SA node is present in the right atrium it stimulates the atria to bond and travel to the AV node.

• AV node is present in the interatrial septum. SA node stimulates the Ventricular contraction.

• SA node is called Sino Atrial node it generates action potentials spontaneously.

• But some times SA node is influenced by the autonomous nervous system.

• The bundle of nerve cells located on the right atria these cells caused the ventricular contraction.