Multiple Choice
Which of the following cranial nerves is not involved in the parasympathetic nervous system?
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14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
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Which of the following is true about the autonomic nervous system?
A
It only consists of the sympathetic division.
B
It regulates involuntary functions such as heart rate and digestion.
C
It is part of the somatic nervous system.
D
It controls voluntary muscle movements.
Verified step by step guidance1
Begin by understanding the autonomic nervous system (ANS). The ANS is a component of the peripheral nervous system that regulates involuntary physiological functions.
Recognize that the ANS consists of two main divisions: the sympathetic division and the parasympathetic division. These divisions work together to maintain homeostasis.
The sympathetic division is responsible for the 'fight or flight' response, increasing heart rate, and redirecting blood flow to muscles during stress.
The parasympathetic division is responsible for 'rest and digest' activities, promoting digestion and slowing down the heart rate.
Conclude that the ANS regulates involuntary functions such as heart rate and digestion, distinguishing it from the somatic nervous system, which controls voluntary muscle movements.
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