PATHOLOGY MCQ
HEART
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The sinoatrial node is located in the ____
|
|
aorta
|
|
|
right atrium
|
|
|
left atrium
|
|
|
right ventricle
|
Explanation:
Detailed explanation-1: -The SA node, also known as the sinus node, represents a crescent-like shaped cluster of myocytes divided by connective tissue, spreading over a few square millimeters. It is located at the junction of the crista terminalis in the upper wall of the right atrium and the opening of the superior vena cava.
Detailed explanation-2: -The sinoatrial node (SAN), located in the right atrium, serves as the primary site for initiation of the normal heartbeat (sinus rhythm) (Figure 1).
Detailed explanation-3: -The SA node called the sinoatrial node lies in the wall of the right atrium near the opening of the superior vena cava.
There is 1 question to complete.