Both the lesser palatine and the zygomatic are maxillary nerves ( from the trigeminal nerve ).
3.
The superior alveolar ( anterior, middle, and posterior ) nerves, branches of the maxillary nerve provide sensory innervation.
4.
The lacrimal nerve is occasionally absent, and its place is then taken by the zygomaticotemporal branch of the maxillary nerve.
5.
The maxillary nerve, division V 2 of the trigeminal nerve travels through the lower portion of the sinus and exits via the foramen rotundum.
6.
Although it is closely related to the pterygopalatine ganglion, it is still considered a branch of the maxillary nerve and does not synapse in the ganglion.
7.
Sensory innervation of the whiskers is provided by the infraorbital branch of the trigeminal maxillary nerve; motor innervation is attributable to the facial ( VII ) nerve.
8.
In the orbit it runs along the upper border of the lateral rectus, with the lacrimal artery, and communicates with the zygomatic branch of the maxillary nerve.
9.
A small quantity of fat, the orbital branch of the superficial temporal artery, and a filament from the zygomatic branch of the maxillary nerve, are contained between these two layers.
10.
It also sends postganglionic parasympathetic fibers to the lacrimal nerve ( a branch of the Ophthalmic nerve, also part of the trigeminal nerve ) via the zygomatic nerve, a branch of the maxillary nerve ( from the trigeminal nerve ), which then arrives at the lacrimal gland.
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