clinical anatomy: cranial nerves

somatic motor

stimulate skeletal muscle

somatic sensory

transmit sensations of touch pain temp and position from sensory receptors

visceral motor

stimulate smooth muscle, modified cardiac muscle, and glands (sympathetic and parasympathetic)

special sensory

smell (olfactory), vision, equilibrium, hearing

olfactory

cn i

optic

cn ii

oculomotor

cn iii

trochlear

cn iv

trigeminal

cn v

abducens

cn vi

facial

cn vii

vestibulocochlear

cn viii

glossopharyngeal

cn ix

vagus

cn x

accessory

cn xi

hypoglossal

cn xii

special sensory - olfaction

smell nasal mucosa of the root of each nasal cavity

details of the olfactory nerve

special sensory - vision

• vision from retina

• reading the bottom line at the eye doctor

details abt the optic nerve

somatic motor and visceral motor

raises superior eyelid, rotates eyeball, superiorly inferiorly and medialy

details of oculomotor nerve

somatic motor

Turns eyeball, inferior laterally

details of the trochlear nerve

three divisions: ophthalmic, maxillary, and mandibular

Somatic sensory and somatic motor

Sensation to face motor to muscle muscles of mastication

details of the trigeminal nerve

somatic motor

turn eye laterally

details of the abducens

somatic motor somatic, sensory, visceral, motor and special sensory of taste

The function is motor to muscles of facial expression, general sensation from skin of both aspects of auricle, parasympathetic innovation to salivary and lacrimal, glands and glands of nose and pallet. Taste anterior 2/3 of tongue.

details of facial nerve

special sensory - equilibrium and hearing

vestibular sensation to position and movement of the head, hearing

details of vesibularcochlear nerve

somatic motor, visceral motor, somatic sensory, visceral sensory, special sensory of taste

The function is motor to assist with swallowing, parasympathetic innovation to parotid gland (salvation) Tympanic cavity and mastoid cells, Middle ear sensation, carotid, body, and sinus receptors, regulate blood pressure, taste posterior 1/3 of tongue

Details of the glossopharyngeal nerve

somatic motor, so sensory, visceral motor, visceral sensory, special sensory of taste

The function is motor to constrict muscles of the pharynx and muscles of the pallet, sensation from auricle, external meatus, and posterior cranial fossa, parasympathetic innovation to muscles of trachea, bronchi, digestive track, cardiac muscle. Visceral sensation to heart and abdominal viscera. Taste from epiglottis and palate

details of vagus nerve

somatic motor

motor to trapezius and sternocleidomastoid

details of spinal accessory nerve

somatic motor

motor to intrinsic and extrinsic muscles of the tongue

details of hypoglossal nerve