function of each cranial nerve

Question 1

olefactory nerve

Answer 1

impulses from olefactory receptor neurones giving information on smell.

Question 2

optic nerve

Answer 2

impulses from the retina

Question 3

oculomotor

Answer 3

innervates: ipsilateral inferior rectus muscle
ipsilateral inferior oblique muscle
ipsilateral medial rectus muscle
contralateral superior rectus muscle

Question 4

Trochlear

Answer 4

superior oblique muscle of the contralateral orbit

Question 5

Trigeminal

Answer 5

sensations to the face, musocus membranes and other structures of the head
motor nerve for the muscles of mastication

Question 6

abducens

Answer 6

lateral rectus of ipsilateral orbit

Question 7

facial nerve

Answer 7

muscles of facial expression: posterior belly of diagastric, stylohyoid, stepedius.
icrimal, submandibular and sublingual glands.
taste sensation from anterior 2/3 of the tongue, hard and soft palates.

Question 8

vestibulocochlear

Answer 8

sesnory info from vestibulae and the cochlea

Question 9

glossopharangeal

Answer 9

stylopharyngeus muscle. paraS innervation of smooth muscle and glands of the pharynx, larynx and viscera of thorax and abdomen.
sensory infor from carotid sinus and body
external ear, tympanic membrane, upper pharynx and posterior 1/3 of tongue

Question 10

vagus

Answer 10

pharynx and larynx, palatoglossus. stretch receptors of aortic arch and chemoreceptors of aortic bodies.
loads of stuff

Question 11

accessory nerve

Answer 11

innervates muscles of oharynx and larynx, trapezius and sternocleidomastoid

Question 12

hypoglossal

Answer 12

all intrinsic and most of extrinsic muscles of the tongue:

genioglossus, styloglossus and hypoglossal.