Multiple Choice
In this diagram of the heart,which of the following choices correctly identifies A and B?
A) A is the AV node; B is the cardiac pacemaker.
B) A is the SA node; B is the septum.
C) A is the AV node; B is the SA node.
D) A is the SA node; B is the AV node.
E) A is the septum; B is the cardiac pacemaker.
Correct Answer:

Verified
Correct Answer:
Verified
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