Asked by Monica Cañizares on Jun 22, 2024
Verified
Which of the following cranial nerves innervates only one muscle of the eyeball?
A) Optic nerve
B) Facial nerve
C) Trochlear nerve
D) Trigeminal nerve
E) Oculomotor nerve
Cranial Nerves
Twelve pairs of nerves that originate in the brain and control a variety of functions including sensation, motor skills, and autonomic functions in the head and neck.
Trochlear Nerve
The fourth cranial nerve, responsible for controlling the superior oblique muscle of the eye, which allows for rotational movement.
Eyeball
The spherical part of the eye that contains the structures responsible for vision, including the lens, retina, and cornea.
- Gauge the role of cranial nerves within sensory and motor processes.
Verified Answer
EC
Elizabeth ChedesterJun 24, 2024
Final Answer :
C
Explanation :
The trochlear nerve (CN IV) innervates only one muscle of the eyeball, the superior oblique muscle. This is unique among the cranial nerves involved in eye movement.
Learning Objectives
- Gauge the role of cranial nerves within sensory and motor processes.