Cranial Nerves
12 pairs
Emerge from the lower surface of the brain and pass through the foramina in the skull
I, II, VIII - sensory
III, IV , XI and XII - motor
V, VII, IX and X are - mixed
Situations of nuclei or Origins of Cranial Nerves
Cerebral Cortex
1st Cranial nerve - Olfactory nerve - sensory - sense of smell
2nd Cranial nerve - Optic nerve - sensory - nerve of sight
Midbrain
3rd Cranial nerve - Oculomotor nerve - motor - eye ball movement, lid movement, pupillary constriction lens accommodation
4th Cranial nerve - Trochlear nerve - motor - superior oblique - movement of the eyeball downward and outward
Pons
5th Cranial nerve - Trigeminal nerve - mixed nerve - both motor and sensory - facial sensation and mastication
6th Cranial nerve - Abducent nerve - motor nerve - motor - lateral rectus - moves the eyeball laterally
7th Cranial nerve - Facial nerve - mixed nerve - facial expression - salivation - taste
8th Cranial nerve - Vestibulocochlear nerve - sensory nerve - hearing and equilibrium
Medulla oblongata
9th Cranial nerve - Glossopharyngeal nerve - mixed nerve - sensation and taste in the pharynx and the tongue, supplies the pharyngeal muscles
10th Cranial nerve - Vagus nerve - mixed nerve - supplies larynx, pharynx, soft palate, thoracic and abdominal viscera
11th Cranial nerve - Spinal accessory nerve - motor nerve - supplies sternocleidomastoid and trapezius muscles
12th Cranial nerve - Hypoglossal nerve - supplies the tongue - movement of the tongue
