ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
Identify the function of the thalamus.
Correct Answer: A
Rationale: The thalamus is primarily a sensory relay center, routing sensory input to the cortex. Temperature and endocrine functions are hypothalamic.
Question 2 of 5
Which spinal nerve branch is NOT correctly matched with the area it serves?
Correct Answer: A
Rationale: The phrenic nerve (C3-C5) serves the diaphragm, not abdominal muscles. Radial, femoral, and sciatic are correctly matched.
Question 3 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 4 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 5 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.