ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
The vestibulocochlear nerve (VIII) is associated with:
Correct Answer: A
Rationale: The vestibulocochlear nerve (CN VIII) handles hearing and balance.
Question 2 of 5
Clostridium botulinum releases this enzyme that destroys peptide bonds.
Correct Answer: B
Rationale: Clostridium botulinum produces botulinum toxin, an endopeptidase that cleaves SNARE proteins, inhibiting neurotransmitter release. Amylase digests starch, exopeptidases cleave ends, protein kinase phosphorylates.
Question 3 of 5
Which of the following is referred to as either physical barriers or physiologic processes (transport system) that separate the circulating blood from the brain extracellular fluid in the central nervous system (CNS)?
Correct Answer: B
Rationale: The blood-brain barrier (BBB) restricts substance movement between blood and brain fluid, protecting the CNS. The Circle of Willis supplies blood, corticobulbar projections control cranial nerves, and the lateral corticospinal tract governs skilled hand movements.
Question 4 of 5
Nurse Jerick is performing a caloric testing of the vestibulo-ocular reflex of an unconscious client. Warm water is poured into the left auditory canal. The client exhibits conjugate eye movement toward the right followed by nystagmus toward the left. The nurse understands that the client is exhibiting a:
Correct Answer: C
Rationale: Warm water in the left ear causes eye movement to the right and nystagmus to the left in an intact brainstem (normal vestibulo-ocular reflex). Abnormal responses suggest lesions or coma.
Question 5 of 5
The autonomic nervous system is responsible for which function(s)?
Correct Answer: A
Rationale: The ANS controls involuntary motor functions (e.g., heart rate, digestion). Sensory functions are handled by the somatic nervous system or visceral afferents, not primarily ANS.