ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
cerebrospinal fluid communicates with the subarachnoid space via the
Correct Answer: A
Rationale: CSF flows from the 4th ventricle (via foramina of Luschka/Magendie) into the subarachnoid space.
Question 2 of 5
The following muscles are supplied by posterior rami of spinal nerves EXCEPT
Correct Answer: D
Rationale: Scalene posterior is supplied by anterior rami (cervical plexus). Posterior rami supply deep back muscles like erector spinae.
Question 3 of 5
Dopamine is an important neurotransmitter. Which disease or disorder results when the neurons in the brain that produce dopamine die?
Correct Answer: C
Rationale: Parkinson disease results from the death of dopamine-producing neurons in the substantia nigra, leading to motor symptoms like tremors. MS affects myelin, ALS affects motor neurons broadly, and seizures are unrelated to dopamine loss.
Question 4 of 5
One of the 31 pairs of nerves that originate on the spinal cord from posterior and anterior roots.
Correct Answer: B
Rationale: Spinal nerves are 31 pairs formed by anterior (motor) and posterior (sensory) roots exiting the spinal cord. Action potentials are signals, Guillain-Barré is a disorder, and nervous system is too broad.
Question 5 of 5
Neuroglial cell of the PNS that forms a myelin sheath around a portion of an axon and participates in axon regeneration after injury.
Correct Answer: C
Rationale: Schwann cells in the PNS myelinate axons and aid regeneration after injury. Wallerian degeneration is a process, neuroblastoma is a tumor, and axosomatic is a synapse type.