Multiple Choice
When assessing for arm drift in a patient with a suspected stroke, you should:
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10. Cell Signaling
Introduction to Cell Signaling
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The cranial nerve responsible for transmitting facial sensations to the brain is the:
A
Facial nerve (Cranial Nerve VII)
B
Glossopharyngeal nerve (Cranial Nerve IX)
C
Trigeminal nerve (Cranial Nerve V)
D
Oculomotor nerve (Cranial Nerve III)
Verified step by step guidance1
Identify the function of each cranial nerve listed in the problem. For example, the Facial nerve (Cranial Nerve VII) is primarily responsible for facial expressions and some taste sensations, while the Glossopharyngeal nerve (Cranial Nerve IX) is involved in taste and swallowing.
Understand that the problem is asking about the cranial nerve responsible for transmitting facial sensations, which includes touch, pain, and temperature from the face to the brain.
Recall that the Trigeminal nerve (Cranial Nerve V) is the primary sensory nerve of the face. It has three branches: the ophthalmic, maxillary, and mandibular branches, which transmit sensory information from different regions of the face.
Eliminate the other options based on their primary functions. For example, the Oculomotor nerve (Cranial Nerve III) is responsible for eye movement and has no role in facial sensation.
Conclude that the Trigeminal nerve (Cranial Nerve V) is the correct answer because it is specifically responsible for transmitting facial sensations to the brain.
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