Which node generates electrical impulses that initiate each heartbeat?
Choose only ONE best answer.
A
Sinoatrial (SA) Node
B
Atrioventricular (AV) Node
C
Bundle of His
A
Sinoatrial (SA) Node
Choose only ONE best answer.
A
Sinoatrial (SA) Node
B
Atrioventricular (AV) Node
C
Bundle of His
Sinoatrial (SA) Node