BIO 290 Cranial Nerves & Functions

olfactory nerve (I)

function: smell

fiber type: special sensory

optic nerve (II)

function: sight

fiber type: special sensory

oculomotor nerve (III)

function: eye movement

fiber type: somatomotor

trochlear nerve (IV)

function: eye movement

fiber type: somatomotor

what are the three branches of the trigeminal nerve

• ophthalmic nerve (V1)

• maxillary nerve (V2)

• mandibular nerve (V3)

ophthalmic nerve

function: touch sensation

fiber type: somatosensory

maxillary nerve

function: touch sensation

fiber type: somatosensory

mandibular nerve

function: touch sensation in the lower face & 2/3 of tongue

fiber type: somatosensory

abducens nerve (VI)

function: eye movement

fiber type: somatomotor

facial nerve (VII)

function: taste (2/3 of tongue), face glands, facial expression

fiber type: special senstory, visceromotor and pharanygeal

vestibulocochlear nerve (VIII)

function: hearing & balance

fiber type: special sensory

glossopharyngeal nerve (IX)

function: tongue touch sensation (post. 1/3), taste (post 1/3), parotid gland

fiber type: somatosensory, special sensory, visceromotor

vagus nerve (X)

function: gut movement & larynx and pharynx muscles

fiber type: visceromotor & pharyngeal

spinal accessory nerve (XI)

function: movement of trap ad sternocleidomastoid m.

fiber type: somatomotor

hypoglossal nerve (XII)

function: tongue movement

fiber type: somatomotor