ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
Parkinson disease is caused by the destruction of the basal nuclei cells which produce which chemical?
Correct Answer: D
Rationale: Parkinson’s results from loss of dopamine-producing cells in the substantia nigra (part of basal nuclei), affecting movement.
Question 2 of 5
Identify the cranial nerve that carries sensory information from the inner ear for balance and hearing.
Correct Answer: C
Rationale: The vestibulocochlear nerve (CN VIII) carries hearing and balance sensory input from the inner ear.
Question 3 of 5
Which of the following is NOT related to the sympathetic division of the autonomic nervous system?
Correct Answer: D
Rationale: The sympathetic division (fight-or-flight) originates from thoracic/lumbar regions with long postganglionic fibers, but digestion is primarily parasympathetic (rest-and-digest).
Question 4 of 5
The fatty substance that insulates and speeds up the conduction of nerve impulses along the axon is called:
Correct Answer: B
Rationale: Myelin, produced by Schwann cells (PNS) or oligodendrocytes (CNS), insulates axons and speeds conduction. Neurilemma aids regeneration, synapse is a gap, and C is a duplicate.
Question 5 of 5
The nodes of Ranvier are found on:
Correct Answer: A
Rationale: Nodes of Ranvier are gaps in the myelin sheath on axons, aiding rapid conduction. Axon hillock initiates, terminals release neurotransmitters, and unmyelinated axons lack nodes.