ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
Regarding the cranial nerves
Correct Answer: C
Rationale: The trochlear nerve (CN IV) innervates only the superior oblique. The trigeminal (V) has motor and sensory roles, abducens (VI) exits via the superior orbital fissure, and hypoglossal (XII) exits via the hypoglossal canal.
Question 2 of 5
Which of the following is a branch of the mandibular nerve
Correct Answer: D
Rationale: The auriculotemporal nerve is a mandibular (V3) branch, supplying the scalp and TMJ. Infraorbital (V2), external nasal (V1), and zygomaticofacial (V2) are not V3.
Question 3 of 5
Regarding the optic pathways
Correct Answer: D
Rationale: Trochlear (CN IV) paralysis prevents downward gaze when the eye is adducted (superior oblique). Abducens (VI) paralysis causes medial deviation.
Question 4 of 5
Regarding the circle of Willis
Correct Answer: D
Rationale: The internal carotid artery gives off the ophthalmic artery before forming the circle of Willis.
Question 5 of 5
What is a common neurotransmitter?
Correct Answer: D
Rationale: Acetylcholine (muscle/nerve communication), GABA (inhibitory), and serotonin (mood regulation) are all common neurotransmitters. 'All of the above' is correct as they are widely recognized examples.