ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
What is the target of an upper motor neuron?
Correct Answer: B
Rationale: Upper motor neurons (UMNs) in the CNS target lower motor neurons (LMNs) in the spinal cord or brainstem, which then innervate skeletal muscles. UMNs don’t directly target muscles or other brain regions like the cortex or thalamus.
Question 2 of 5
The brain stem does NOT include the:
Correct Answer: A
Rationale: The brainstem includes the midbrain, pons, and medulla oblongata. The diencephalon (thalamus, hypothalamus) is part of the forebrain, not the brainstem.
Question 3 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 4 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 5 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.