A physician shines a light into the right eye and the right pupil constricts in response. Which of the following cranial nerves is being tested in this scenario?
A) Optic nerve (CN II)
B) Abducens nerve (CN VI)
C) Facial nerve (CN VII)
D) Vagus nerve (CN X)

Question

Quizplus · Accepted Answer

The optic nerve (CN II) is responsible for transmitting visual information from the retina to the brain. When light is shone into the eye, it is the optic nerve that detects this stimulus and initiates the pupillary light reflex, leading to constriction of the pupil.

A Physician Shines a Light into the Right Eye and the Right