Identify an accurate statement about the nerve supply of the heart.
A. The sympathetic nerves that innervate the heart become active when the body needs to rest and conserve energy.
B. The norepinephrine released by the sympathetic nerves in the heart act on the sinoatrial (SA) node to decrease heart rate.
C. The autonomic nervous system regulates the rate and force of the contractions of the heart.
D. The heart receives its nerve supply from only one division of the autonomic nervous system, the sympathetic division.
Answer: C
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