Question

1. which part of the hearts conduction system sends the impulse that begins the process of conduction?

a. atrioventricular (av) node
b. sinoatrial (sa) node
c. bundle of his
d. purkinje fibers

Explanation:

The sino - atrial (SA) node is known as the natural pacemaker of the heart. It initiates the electrical impulses that start the heart's conduction process, causing the atria to contract. The AV node, Bundle of His, and Purkinje fibers are involved in later stages of the conduction system.

Answer:

B. Sinoatrial (SA) node