Which Statement Concerning the AV Node Is Correct

question 73

Multiple Choice

Which statement concerning the AV node is correct?

• A) It is the normal pacemaker of the heart.
• B) It is the only electrical connection between the atria and the ventricles.
• C) It rapidly conducts the impulse from the atria to the ventricles so that they contract simultaneously.
• D) It is not innervated by the vagus.

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Definitions:

Venous Flow

The movement of blood back to the heart through the veins, an essential component of the circulatory system's function.

Humming Sound

A low, steady continuous sound made by vibrating an object or by humans in vocalization.

Weak, Thready Pulse

A pulse that is difficult to feel and often indicates a decrease in blood volume or pressure.

Palpable

Able to be touched or felt, typically used in a medical context to describe something detectable on physical examination.