QuestionSBA
QuestionChoice
This is correct as this patient has a pupil that will not constrict, meaning that it is permanently dilated. The nerve that causes constriction of the pupil is the oculomotor nerve.
10023630
a
Oculomotor nerve
QuestionChoice
This nerve provides sensation to the upper lip, nose and lower eyelid, along with parasympathetic innervation to the lacrimal gland.
10023631
b
Maxillary branch of the trigeminal nerve
QuestionChoice
The vestibulocochlear nerve's function is hearing (cochlear portion) and balance (vestibular portion). It plays no role in eye movement or pupil size.
10023632
c
Vestibulocochlear nerve
QuestionChoice
The glossopharyngeal nerve provides parasympathetic innervation to the parotid, submandibular and sublingual glands. It also provides sensation to the middle ear cavity via the tympanic plexus within the middle ear cavity.
10023633
d
Glossopharyngeal nerve
QuestionChoice
The facial nerve supplies taste to the posterior 1/3rd of the tongue, motor function to muscles of facial expression, and sensory function to a small area of the skin around the external ear.
10023634
e
Facial nerve
Concept
Chapter
2693
4305
Autonomic nervous system
Topic
152
Neuroscience
17124
A 25-year-old male presents to the GP as his parents have noticed that his right eye is looking different. The patient has experienced no new symptoms. The GP looks into the patient's eye and finds that his right pupil is dilated, even when a torch is shone on it.

Given the diagnosis, what nerve is affected?
a