The nasociliary nerve is a branch of which division of the trigeminal nerve?

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Multiple Choice

The nasociliary nerve is a branch of which division of the trigeminal nerve?

The nasociliary nerve is a branch of the ophthalmic division of the trigeminal nerve (the first division, V1). The three divisions of the trigeminal nerve are arranged with V1 supplying sensation to the face and orbit, V2 the midface, and V3 the lower face and muscles of mastication. The nasociliary nerve travels within the orbit as part of V1 and gives off branches such as the infratrochlear and anterior ethmoidal nerves, as well as long ciliary nerves to the eyeball. This makes it a product of V1, not the olfactory (CN I), optic (CN II), or vestibulocochlear (CN VIII) nerves.

The nasociliary nerve is a branch of the ophthalmic division of the trigeminal nerve (the first division, V1). The three divisions of the trigeminal nerve are arranged with V1 supplying sensation to the face and orbit, V2 the midface, and V3 the lower face and muscles of mastication. The nasociliary nerve travels within the orbit as part of V1 and gives off branches such as the infratrochlear and anterior ethmoidal nerves, as well as long ciliary nerves to the eyeball. This makes it a product of V1, not the olfactory (CN I), optic (CN II), or vestibulocochlear (CN VIII) nerves.

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