Trigeminal n. (CN V) -Mandibular n. (V3) [sensory, branchial motor]

Question 1

Meningeal branch

Answer 1

function- sensory & postganglionic sympathetic innervation of the cranial dura mater

Question 2

Muscular branches

-Nerve to the medial pterygoid

Answer 2

function- sensory & motor (trigeminal motor nucleus of the pons) innervation of the medial pterygoid

Question 3

Muscular branches

-Masseteric n.

Answer 3

function- sensory & motor (trigeminal motor nucleus of the pons) innervation of the masseter muscle

Question 4

Muscular branches

-Deep temporal n.

Answer 4

function- sensory & motor (trigeminal motor nucleus of the pons) innervation of the temporalis muscle

Question 5

Muscular branches

-Nerve to the lateral pterygoid

Answer 5

function- sensory & motor (trigeminal motor nucleus of the pons) oinnervation of the lateral pterygoid muscle

Question 6

Sensory branches (other than n. to mylohyoid)

-Buccal branch (a.k.a., long buccal n.)

Answer 6

function- sensory innervation of the buccal skin and oral mucosa

Question 7

Sensory branches (other than n. to mylohyoid)

-Auriculotemporal n.

Answer 7

function- sensory innervation of the TMJ, external auditory meatus and skin anterior to the ear, and sensory, postganglionic sympathetic & postganglionic parasympathetic (axons via CN IX arise from the otic ganglion) innervation of the parotid gland

Question 8

Sensory branches (other than n. to mylohyoid)

-Lingual n.

Answer 8

function- sensory innervation of the mucosa overlying the anterior 2/3rds of the tongue, the floor of the oral cavity and the adjacent gingiva, taste innervation to the anterior 2/3rds of the tongue (communication from the chorda tympani n. [CN VII]), and sensory, postganglionic sympathetic and preganglionic parasympathetic (communication from the chorda tympani n.) innervation of the lingual, sublingual and submandibular glands (by way of the submandibular ganglion via CN VII, some of the postganglionic parasympathetic axons rejoin the lingual nerve branches prior to entering the glands

Question 9

Sensory branches (other than n. to mylohyoid)

-Inferior alveolar n.

Answer 9

function- sensory innervation of the lower teeth and their adjacent buccal and labial gingiva

• Mental n.
  function- sensory innervation of the skin overlying the chin and lower lip
• N. to mylohyoid
  function- sensory & motor (trigeminal motor nucleus of the pons) innervation of the mylohyoid and anterior digastric muscles