ANAT.

• Functions:
• -Sensory: skin, face, eye, nasal cavity, teeth and 2/3 of tongue.
• -Somatic motor to muscles of mastication.
• *All 3 divisions are snesory & only V3 has motor functions.

• Pathway through skull:
• -V1 through superior orbital fissure (opthalmic branch)
• -V2 through foramen rotundum (Maxillary branch)
• -***V3 through foramen ovale. (Mandibular branch): 3 muscles of mastication.

• Functions:
• -Innervates muscles of facial expression.
• -Sublingual/sungmandibular glands (2 salivary glands)
• -Special sensory: taste from 2/3 of tongue.

• Pathway:
• -Into internal auditory meatus & out through stylomastoid foramen.

• Functions:
• -Balance & hearing

• Functions:
• 1) Autonomic motor to parotid glands.
• 2) General sensory: taste from posterior 1/3 of tongue.
• 3) Monitor & control gases and pressure

Pathway: jugular foramen

1) Somatic motor to muscles : pharynx (swallowing) & larynx (speaking).

2) Autonomoic motor (paryasympathetic) to heart, lungs, GI tract.

• *Heart & lungs decrease rate/activity
• *GI tract: increases activity

Pathway: jugular foramen.

Function: somatic motor to trapezius & stemocleidomastoid muscle.

Pathway: jugular foramen.

Function: somatic motor to muscles of the tongue.

Pathway: Hypoglossal canal

*Palatoglossus: innervated by Vagus Nerve (swallowing, not tongue movement).