Multiple Choice
Which of these will increase the heart rate?
A) only sympathetic stimulation to the SA node
B) only the application of epinephrine to the SA node
C) only the application of acetylcholine to the SA node
D) both sympathetic stimulation and application of epinephrine to the SA node
E) both sympathetic stimulation and application of acetylcholine to the SA node
Correct Answer:

Verified
Correct Answer:
Verified
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