Multiple Choice
What is the importance of the delay in the action potential in the AV node?
A) It allows the action potential to reach both ventricles at the same time.
B) It allows an action potential to reach the left atrium so both atria contract together.
C) It allows an action potential to reach the left atrium so both atria contract together,before the ventricles contract.
D) It allows time for the atria to be filled with blood.
Correct Answer:
Verified
Correct Answer:
Verified
Q27: The action potentials are slowed at the
Q39: A knowledge of heart location would NOT
Q64: Which of the following would result from
Q65: When a pacemaker potential in the SA
Q66: In a physiology lab,the students designed an
Q67: The baroreceptor reflex would cause which of
Q72: Excess potassium ions in cardiac tissue cause<br>A)an
Q77: The relationship between preload and stroke volume
Q133: The peripheral chemoreceptors that respond to oxygen
Q142: The adult heart averages _ grams.<br>A) 100-200<br>B)