ANATOMY
CHEST AND CARDIOVASCULAR
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following is considered the pacemaker of the heart?
|
|
SA node
|
|
|
AV node
|
|
|
purkinje fibers
|
|
|
Bundle of His
|
Explanation:
Detailed explanation-1: -The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and rate in a healthy heart. Hence, the SA node is referred to as the natural pacemaker of the heart.
Detailed explanation-2: -Cells within the sinoatrial (SA) node are the primary pacemaker site within the heart. These cells are characterized as having no true resting potential, but instead generate regular, spontaneous action potentials.
Detailed explanation-3: -Single chamber. One lead attaches to the upper or lower heart chamber. Dual-chamber. Uses two leads, one for the upper and one for the lower chamber. Biventricular pacemakers (used in cardiac resynchronization therapy). 11-Dec-2022
There is 1 question to complete.