ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
Which of the following is not a function of the ANS?
Correct Answer: D
Rationale: The ANS regulates involuntary visceral functions, not conscious motor control (somatic nervous system). Other options are ANS roles.
Question 2 of 5
The speed of a nerve impulse is independent of the:
Correct Answer: D
Rationale: Impulse speed depends on fiber diameter, myelination (including Schwann cells in PNS), and physiological condition (e.g., ion channels). Length affects total time, not speed (m/s).
Question 3 of 5
The enzyme that destroys acetylcholine is:
Correct Answer: C
Rationale: Cholinesterase (acetylcholinesterase) breaks down acetylcholine in the synaptic cleft. Epinephrine is a neurotransmitter, ‘acetylcholinase’ is not a real enzyme.
Question 4 of 5
The gray matter of the brain consists mainly of neuron cell:
Correct Answer: D
Rationale: Gray matter comprises neuron cell bodies, dendrites, and unmyelinated axons. White matter is myelinated axons.
Question 5 of 5
Clusters of neuron cell bodies found in the CNS are termed:
Correct Answer: D
Rationale: In the CNS, clusters of neuron cell bodies are called nuclei. Ganglia are PNS equivalents.