Multiple Choice
Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.)
-allows the impulse to spread from cell to cell
A) SA node
B) AV node
C) bundle of His and Purkinje system
D) gap junction
Correct Answer:

Verified
Correct Answer:
Verified
Q31: Use the answer code below to complete
Q42: An increase in parasympathetic activity _ the
Q58: Match each ECG wave or complex with
Q92: The heart is posterior to the sternum.
Q93: Which of the following is the cranial
Q96: Match the anatomical structures, labelled a. through
Q99: The second heart sound occurs when the
Q101: Match the effects with sympathetic or parasympathetic
Q131: The action potential spreads through the atria
Q230: According to the Frank-Starling law of the