Use the following answer code to indicate which factor involved in the initiation and spread of cardiac excitation is being identified.
-Allows the impulse to spread from cell to cell.
A)SA node
B)AV node
C)Bundle of His and Purkinje system
D)Gap junctions

Question

Quizplus · Accepted Answer

Gap junctions are specialized intercellular connections that allow for direct electrical coupling between adjacent cells, which is necessary for the spread of cardiac excitation. The other options listed are specific structures or regions within the heart that contribute to the initiation or propagation of electrical activity, but do not provide the direct connection between cells that gap junctions do.

Use the Following Answer Code to Indicate Which Factor Involved