Cranial Nerves not finished

How many cranial nerves are there?

12 pairs

Most cranial nerves are attached to what

Brain stem

Where does the first pair in second pair of the cranial nerves originate origin?

The first pair originates in the nasal cavity in the second pair, originates in the eyes and has synapse in thalamus

Olfactory nerve I is what nerve type

Sensory nerve

olfactory nerve I is associated with what

Sense of smell

what type of neurons in oflactory nerve I

Bipolar neurons

optic nerve II nerve type

Sensory nerve

optic nerve II associated with what

Sense of vision

optic nerve II neuron cell bodies form what and where do they pass through?

Neuron cell bodies form ganglion layers of retina and pass through optic foramina of the orbits

oculomotor nerve III nerve type

primarily motor nerve

oculomotor nerve III function

Motor impulses to several voluntary muscles that raise eyelids and move the eyes. Motor impulses to involuntary muscles that focus lens and just lay entering eye.

trochlear nerve (IV) nerve type

Mostly motor

what is the smallest pair of cranial nerve?

The trochlear nerve

trochlear nerve (IV) function

motor impulses to one pair of muscles that move the eyes

trigeminal nerve V nerve type

Mixed nerve

what is the largest pair of cranial nerves?

Trigeminal nerve

What are the three branches of the trigeminal nerve?

opthalmic division, maxillary division and mandibular division

Ophthalmic division of trigeminal nerve

Sensory from surface of eyes, tear gland, scalp forehead, and upper eyelids

maxillary division of trigeminal nerve function

Sensory from upper teeth, upper gum, upper lip, palette, and skin a face

mandibular division of trigeminal nerve function

Sensory from scalp skin of jaw, lower teeth, lower gum, and lower lip

trigeminal nerve function

Motor to muscles of mastication

abducens nerve (VI) nerve type

motor nerve

facial nerve VII nevre type + function

mixed nerve. Sensory from taste, receptors motor to muscles of facial expressions, tear glands and salivary glands