Body Fluids And Circulation Question 13

Question: Which of the following correctly traces the electrical impulses that trigger each heartbeat?

Options:

A) Ventricles-Pacemaker-AV node-Atria

B) Pacemaker-AV node-Atria-Ventricles

C) Atria-Pacemaker-AV node-Ventricles

D) Pacemaker-Atria-AV node-Ventricles

Show Answer

Answer:

Correct Answer: D

Solution:

[d] The pacemaker initiates an impulse through the atria, which is then conducted to the ventricles by the AV node.