GROSS ANATOMY

Detailed explanation-1: -Here, the preganglionic parasympathetic nerve fibers synapse in the aptly named pterygopalatine ganglion. The postganglionic parasympathetic fibers then join branches of the V2 division of CN V and provide innervation to: Lacrimal glands.

Detailed explanation-2: -The parasympathetic root is derived from the greater petrosal nerve via the pterygoid canal and consists of preganglionic parasympathetic fibers from the facial nerve, which synapse within the ganglion.

Detailed explanation-3: -The maxillary nerve (V2) passes through the foramen rotundum and into the infraorbital canal, where, at the pterygopalatine fossa, it branches into the pterygopalatine ganglion, with parasympathetic and sensory branches to the paranasal sinuses.

Detailed explanation-4: -The pterygopalatine ganglion gives rise to the following nerves: the nasopalatine nerve, the lesser palatine nerve, the greater palatine nerve, the posterior superior lateral nasal nerves, the posterior inferior lateral nasal nerves, and pharyngeal nerve.