Multiple Choice
Which is true when your sympathetic nervous system is more active?
A) The SA node depolarizes more rapidly.
B) The myocardium repolarizes more rapidly.
C) More Ca2+ becomes available and causes more forceful heart contractions.
D) Norepinephrine is stimulating the heart.
E) All of these.
Correct Answer:
Verified
Correct Answer:
Verified
Q78: A whistling murmur heard between the second
Q81: Choose a correct sequence of blood flow
Q84: Complete each of the following statements with
Q85: Depolarization occurs at the AV node<br>A)during the
Q85: Complete each of the following statments.<br>Myocardial _
Q86: Complete each of the following statments.<br>During the
Q87: Why can't tetanus occur in the heart?<br>A)There
Q88: Complete each of the following statments.<br>The _
Q120: The function of the chordae tendineae and
Q123: One important function of the intrinsic control