Multiple Choice
Which of the following is the normal sequence of signal conduction in the human heart?
A) neural and chemical messengers -AV node -atria -SA node -ventricles
B) neural but not chemical messengers -AV node -ventricles -SA node - atria
C) neural and chemical messengers -ventricles -SA node -atria -AV node
D) neural and chemical messengers -SA node -atria -AV node -ventricles
E) chemical but not neural messengers -atria -SA node -ventricles -AV node
Correct Answer:

Verified
Correct Answer:
Verified
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