Which nerve is a branch of CN V1 that supplies the cornea?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which nerve is a branch of CN V1 that supplies the cornea?

Explanation:
Corneal sensation is carried by sensory fibers that travel with the nasociliary nerve, a branch of the ophthalmic division (CN V1) of the trigeminal nerve. The nasociliary gives the long ciliary nerves, which enter the cornea and transmit its sensory information. The other nerves listed do not reach the cornea: the frontal nerve (a V1 branch) supplies the forehead and upper eyelid skin, the lacrimal nerve supplies the lacrimal gland and lateral canthus, and the zygomatic nerve comes from V2 (the maxillary division) and does not innervate the cornea. Therefore, the nasociliary nerve is the source of corneal innervation.

Corneal sensation is carried by sensory fibers that travel with the nasociliary nerve, a branch of the ophthalmic division (CN V1) of the trigeminal nerve. The nasociliary gives the long ciliary nerves, which enter the cornea and transmit its sensory information. The other nerves listed do not reach the cornea: the frontal nerve (a V1 branch) supplies the forehead and upper eyelid skin, the lacrimal nerve supplies the lacrimal gland and lateral canthus, and the zygomatic nerve comes from V2 (the maxillary division) and does not innervate the cornea. Therefore, the nasociliary nerve is the source of corneal innervation.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy