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pkclary pkclary
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6 years ago
Which of the following is the normal sequence of signal conduction in the human heart?
A) neural and chemical messengers → SA node → atria → AV node → ventricles
B) neural but not chemical messengers → AV node → ventricles → SA node → atria
C) chemical but not neural messengers → atria → SA node → ventricles → AV node
D) neural and chemical messengers → ventricles → SA node → atria → AV node
E) neural and chemical messengers →AV node → atria → SA node → ventricles
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
Authors:
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6 years ago
A
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