Multiple Choice
Refer to the diagram below. What is the correct order of structures in the electrical excitation pathway that generates a normal heartbeat?
A) 1,2,3,4,5,6
B) 1,5,4,2,3,6
C) 6,3,2,4,5,1
D) 3,6,2,4,1,5
E) 3,2,6,4,5,1
Correct Answer:

Verified
Correct Answer:
Verified
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