Multiple Choice
Which of the following would result from a reduced function of the sodium channels in the SA node?
A) depolarization would be delayed
B) the heart rate would decrease
C) repolarization would not occur
D) a shortened plateau phase
E) depolarization would be delayed and the heart rate would decrease
Correct Answer:

Verified
Correct Answer:
Verified
Q59: The P wave of an ECG indicates<br>A)atrial
Q61: Cardiac muscle cells<br>A)have smooth ER but no
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
Q68: What is the importance of the delay
Q83: The pericardial sac is lined with<br>A) fibrous
Q94: The long refractory period observed in cardiac
Q133: The peripheral chemoreceptors that respond to oxygen
Q142: The adult heart averages _ grams.<br>A) 100-200<br>B)