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5C) CN V (TRIGEMINAL)-MAXILLARY DIVISION BRANCHES (4, 4A, 4B)

Anatomy-Neuroanatomy

5C) CN V (TRIGEMINAL)-MAXILLARY DIVISION BRANCHES (4, 4A, 4B)

4. ZYGOMATIC BRANCH - arises in the pterygopalatine fossa, runs above the maxillary nerve in the infraorbital fissure to enter the orbit.
- It passes along the lower-lateral wall of the zygomatico-orbital foramen where it divides into the zygomatico-facial + zygomatico-temporal branches.
- Before entering the foramen it gives off a lacrimal branch to the lacrimal nerve (branch of the OPTHALMIC NERVE), thereby providing secremotor fibers to the lacrimal gland.

4A. ZYGOMATICO-FACIAL BRANCH - emerges from the infraorbital foramen to supply the outer surface of the zygoma.

4B. ZYGOMATICO-TEMPORAL BRANCH - emerges in the temporal fossa through a foramen in the temporal surface of the zygomatic bone. Supplies skin over the hairless part of the temple at the level of the upper eyelid.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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