ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
Which structure is encircled by the circle of Willis?
Correct Answer: D
Rationale: The circle of Willis, an arterial ring at the brain’s base, encircles the pituitary stalk (infundibulum), providing blood to the brain. The cavernous sinus, pineal gland, and aqueduct are not within its structure.
Question 2 of 5
with regard to the cutaneous innervation of the thorax and abdomen
Correct Answer: C
Rationale: The thorax/abdomen is innervated segmentally by anterior rami of T1-L1. Above the 2nd rib is C2-C4 (supraclavicular nerves), deficits require multiple segments due to overlap, and T10 supplies the umbilicus.
Question 3 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 4 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 5 of 5
The septum of the nasal cavity is innervated by
Correct Answer: A
Rationale: The nasopalatine nerve (V2) innervates the nasal septum.