ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
Identify the cranial nerve that serves the muscles of the face for facial expression.
Correct Answer: C
Rationale: The facial nerve (CN VII) controls facial expression muscles (e.g., smiling). Trigeminal is sensory/motor (chewing), abducens and oculomotor move eyes.
Question 2 of 5
Which of the following is NOT an aging effect on the nervous system?
Correct Answer: D
Rationale: Aging decreases neurotransmitters, increases disorders, and reduces neurons. Mental activities don’t inherently increase with age.
Question 3 of 5
The rapid reversal of electrical potential along the membrane of a neuron is called:
Correct Answer: A
Rationale: An action potential is the rapid depolarization and repolarization of a neuron’s membrane during impulse transmission. Resting potential is the stable state, others are synaptic effects.
Question 4 of 5
In the central nervous system, clusters of cell bodies are called:
Correct Answer: A
Rationale: Nuclei are clusters of cell bodies in the CNS (e.g., basal nuclei). Ganglia are PNS, tracts are axons, and nerves are PNS bundles.
Question 5 of 5
In the peripheral nervous system, Schwann cells wrap around the:
Correct Answer: C
Rationale: Schwann cells wrap around axons in the PNS to form myelin. Axon hillock and cell body are unmyelinated, dendrites rarely myelinated. (Answer corrected from 'nodes' to 'axon' based on context.)