QuestionJune 25, 2025

Impulses carried to the heart by means of fibers that secrete acetylcholine are __ impulses and cause the heart rate to __ parasympathetic; increase parasympathetic; decrease sympathetic; increase sympathetic; decrease

Impulses carried to the heart by means of fibers that secrete acetylcholine are __ impulses and cause the heart rate to __ parasympathetic; increase parasympathetic; decrease sympathetic; increase sympathetic; decrease
Impulses carried to the heart by means of fibers that secrete acetylcholine are __ impulses and cause the heart rate to
__
parasympathetic; increase
parasympathetic; decrease
sympathetic; increase
sympathetic; decrease

Solution
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Answer

parasympathetic; decrease Explanation 1. Identify the type of fibers Fibers that secrete acetylcholine are part of the parasympathetic nervous system. 2. Determine the effect on heart rate Parasympathetic impulses decrease the heart rate.

Explanation

1. Identify the type of fibers<br /> Fibers that secrete acetylcholine are part of the parasympathetic nervous system.<br /><br />2. Determine the effect on heart rate<br /> Parasympathetic impulses decrease the heart rate.
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