ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
The tightly packed coil of the Schwann cell plasma membrane that encircles certain kinds of axons is called:
Correct Answer: A
Rationale: The myelin sheath is formed by Schwann cells (PNS) wrapping around axons. Neurilemma is the outer Schwann cell layer, nodes are gaps, gray matter is unmyelinated.
Question 2 of 5
A client who recently experienced a stroke is displaying deficits in speech. Recalling concepts of physiology, which lobes of the brain would the nurse consider to be likely affected by the stroke?
Correct Answer: D
Rationale: Speech deficits (e.g., Broca’s area in frontal lobe, Wernicke’s in temporal lobe) suggest frontal and temporal lobe involvement. Parietal handles sensation, occipital vision.
Question 3 of 5
While teaching the client about a diagnosed endocrine disorder, which area of the brain would the nurse include as the center in the brain that regulates hormone production?
Correct Answer: B
Rationale: The diencephalon (hypothalamus, pituitary) regulates hormone production. Cerebrum handles cognition, brainstem vital functions, cerebellum coordination.
Question 4 of 5
Neuropeptides are:
Correct Answer: A
Rationale: Neuropeptides are small protein-like molecules that act as neurotransmitters or neuromodulators, released by neurons to communicate with other cells. They are not glial cells, not produced by the choroid plexus (which makes CSF), nor nutrients.
Question 5 of 5
Tracts of white matter which connect the right and left hemispheres are composed of:
Correct Answer: C
Rationale: Commissural fibers (e.g., corpus callosum) connect the right and left cerebral hemispheres. Decussation fibers cross midline, association fibers connect within one hemisphere, and projection fibers link cortex to lower structures.