The av node is located
a. in the bottom of the atrium just above the ventricles
b. in the right atrium
c. in the bundle of his
d. in the heart

a. in the bottom of the atrium just above the ventricles

Explanation:

AV node -

It helps to control the heart rate , it serves as an electrical relay station , reduces the electrical current which is sent by the SA node .

The location of the AV node , is at the lower back section of the inter atrial septum , and conducts the electrical impulse normally from the atria to ventricles .

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