Paths Of Psym Nerves

Question 1

To Lacrimal Gland

Answer 1

Facial N runs into Geniculate Ganglion

Greater Petrosal arrises at foramen lacerum, exits the nerve through the pterygoid canal which is in the sphenoid bone

Fibers attach to ptergopalatine ganglion, where they then run into zygomatic n

Zygomatic n runs along the inferior and lateral part of the orbit, where it send off communicating branch to lacrimal n

Lacrimal n takes it the rest of the way

Question 2

Psym to Submandibular and Sublingual Glands

Answer 2

Facial n gives off chorda tympani within facial canal, after geniculate ganglion

Chorda tympani runs over the tensor tympani in middle ear and exits via the petrotympanic fissure to to run into lingual n (Still pre-synaptic fibers here)

From here, chorda tympani runs to submandibular ganglia to give branches to submandibular glands and sublingual glands

Question 3

Psym to Otic Ganglion

Answer 3

Glossopharyngeal n exits the jugular foramen, and gives off tympanic n

Tympanic n enters the ear through the tympanic canaliculus in petrous part of temporal

Tympanic n makes tympanic plexus in middle ear, which lesser petrosal arises from

Runs through hiatus of lesser petrosal in sphenoid bone, and exits into foramen ovale

Lesser petrosal hits the otic ganglion just medial to foramen ovale, where it then runs with auriculotemporal of V3 to get to parotid gland