• CN V1: orbit and nasal cavity, autonomics to eye and lacrimal gland.
• CN V2: nasal and oral cavity, including parasympathetics to salivary gland.
• CN V3: infratemporal fossa, mm mastication

trigemnial nerve (sublingual) senses temperature of the food

facial nerve detect taste

these two run parallel to each other.

• ciliary ganglion: CN III to intraocular mm
• pterygopalatine ganlgion: CN VII to lacrimal gland.
• otic ganglion: CN IX to parotid gland
• submandibular ganglion: CN VII to sublingual and submandibular.

• lacrimal n V1
• frontal n V1
• Supratrochlear n V1
• infratrochlear n V1
• nasociliary n V1
• Ciliary ganglion

Olfactory CN I

external nasal N

• special sensory-CN I olfactory
• Somatic sensory-branch of V1 and V2
• sympathetic to blood vessel 
• parasymthathetic to mucous glands

1. go through foramen rotundum
2. go by pterygopalatine fossa: branch off into zygomatic N, zygomaticotemporal, zygomaticofacial, posterior superior alveolar n, greater and lesser palatine nn.
3. pass infraorbital fissure
4. out of infraorbial foramen: brach off into inferior palpebral, lateral nasal, superior labial, and aterior superior alveolar.

• parotid gland (CN IX via CN V3)
• Sublingual gland (CN VII via CN V3)
• submandibular gland (CN VII via CN V3)

anterior, middle and posterior superior alveolar n

alveolar arteries

inferior alveolar n

mental n

• general somatic afferent
• special visceral efferent
• relays 2 sets of postganglionic parasympathtics from ganglion to targets
• relays sepcial sensory fibers (taste) to chorda tympani branch of facial N VII

• postganglionic parasympathetics to parotid gland from IX.
• postganglionic parasympathetic to sublingual and submanibular glands from VII.

• taste from anterior 2/3 of tongue
• via Lingual n to chorda tympani, then to facial VII
• taste fiber DO NOT synapse in submandibular ganglion

• muscle of mastication: masseter, tempralis, medial/lateral pterygoid, anterior belly of digastric and mylohyoid mm, tensor veli palatini (tense palate and opens pharyngotympatnic tube), tensor tympani.

• posterior belly of digastic (VII)
• anterior belly of digastic (V3)
• infrahyoid muscles
• mylohyoid (V3)

Bilateral: elevates and retracts mandible

unilateral: elevates mandible and rotates to ipsilateral side.

Bilateral: elevates mandible, protracts mandible

unilateral: elevates mandible, rotates mandible to contralateral side

bilateral: elevation, protraction

unilateral: elevation, rotates mandible to contralateral side

Bilateral: protract

unilateral: rotates mandible to contralateral side, controls retraction of condyle during power stroke of mastication

bilateral: protracts mandible, pull condyle inferiorly

unilateral: rotate mandible to contralateral side, open jaw

Mastication involves transverse movements, not just opening and closing

transverse movements are achieved via rotation about a vertical axis near the chewing side condyle

this entails protraction and retraction of balancing condyle