Asked by
Sourichanh Thepvong
on Oct 21, 2024
Verified
A patient has presented with an abnormal reflex response. In response to a flash of light, the patient will move his eyes towards the light but not turn his head. Which of the following may explain the condition?
A) The patient has damage to the accessory nerve (XI) , affecting his ability to reflexively turn his head.
B) The patient has damage to the oculomotor nerve (III) , affecting his ability to coordinate eye movement and head movement.
C) The patient has damage to his trochlear nerve (IV) , accentuating his ability to move his eyes and rendering the need to move the head unnecessary.
D) The patient has damage to the occipital lobe of the cerebrum, causing him to be blind to the flash of light.
Accessory Nerve
A cranial nerve that innervates the sternocleidomastoid and trapezius muscles, facilitating shoulder, neck, and head movement.
Oculomotor Nerve
The third cranial nerve that controls most of the eye's movements, the constriction of the pupil, and maintains an open eyelid.
Trochlear Nerve
Cranial nerve IV, to the muscle (superior oblique) turning around a pulley.
- Comprehend the functions specialized in sensory and motor tasks by cranial nerves.
- Assess the indicators of sensory and motor pathway disorders.
Verified Answer
RA
Learning Objectives
- Comprehend the functions specialized in sensory and motor tasks by cranial nerves.
- Assess the indicators of sensory and motor pathway disorders.