ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
With regard to dermatomal nerve supply:
Correct Answer: A
Rationale: C7 supplies the index finger dermatome. The axial line separates C5/C6 (anterior/posterior), T4 is at the nipple, and T10 supplies the umbilicus.
Question 2 of 5
Which of the following is not a branch of the trigeminal nerve?
Correct Answer: B
Rationale: The great auricular nerve (C2-C3, cervical plexus) supplies the ear, not CN V. Supraorbital (V1), mental (V3), and lacrimal (V1) are trigeminal branches.
Question 3 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 4 of 5
The septum of the nasal cavity is innervated by
Correct Answer: A
Rationale: The nasopalatine nerve (V2) innervates the nasal septum.
Question 5 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.