cranial nerves

Question 1

olfactory nerve is a special somatic

Answer 1

false
it is a special visceral

Question 2

what does the optic nerve innervate and its function

Answer 2

the retina of the eye
vision and pupile reflection and accomodation reflexion

Question 3

from where the optic nerve exit

Answer 3

optic canal

Question 4

from where the olfactory nerve exit

Answer 4

cribriform canal

Question 5

describe the pathway of optic nerve

Answer 5

photoreceptor, optic disc, optic nerve, cross to the opposit site (optic chiasm)

Question 6

what does the olfactory nerve inervate

Answer 6

nasal cavity

Question 7

what does the olfactory nerve innervate

Answer 7

nasal cavity

Question 8

what is the number of oculomotor nerve

Answer 8

3

Question 9

what does the 3rd cranial nerve do

Answer 9

a motor nerve that innervates the muscles of the eye:
superior rectus
medial rectus
inferior rectus
inferior oblique (up and in)
levator palpebrae (Elevates the upper eyelid)
Iris sphincter muscle (constriction of pupile)

Question 10

oculomotor nerve exit from

Answer 10

superior orbital fissur

Question 11

what is the 4th nerve

Answer 11

trochlear nerve

Question 12

what does the trochlear do

Answer 12

innervates the superior oblique muscle

Question 13

from where the 4th nerve exit

Answer 13

superior orbital fissure

Question 14

what is the 5th nerve and what is its type?

Answer 14

trigeminal nerve, it is a mixt nerve composed of 3 parts

Question 15

name the parts of 5th nerve and from where they exit

Answer 15

ophthalmic (superior orbital fissure)
maxillary (foramen rotundun)
mandibular (foramen oval)

Question 16

what are the functions of mandibular nerve

Answer 16

sensory: lower 2/3 of the face, genarel sensation of 2/3 anterior tongue, lower lip, the lower row of teeth.

motor: muscles of mastication, swallowing

Question 17

what are the functions of ophthalmic nerve

Answer 17

sensory:
scalp, forehead, upper eyelid, cornea, nose

Question 18

what are the functions of maxillary nerve

Answer 18

sensory:
lower eyelid, checks, maxillary sinus, upper lip and upper teeth row, superior palate.

Question 19

what number is abducens nerve and what does it do

Answer 19

number 6
innervate the lateral rectus muscle of the eye

Question 20

what is the 7th cranial nerve, and what is its type ?

Answer 20

facial nerve
mixt

Question 21

what does the motor part of facial nerve do?

Answer 21

innervate the muscles of : facial expression, digastric muscle, stylohyoid, stapedius

Question 22

what does the sensory part of facial nerve do?

Answer 22

special sensation: 2/3 of anterior thongue
general sensation: concha of external ear
parasympathetic: sublingual and submandibular glands

Question 23

from where does the 7th nerve exit

Answer 23

internal acoustic meatus

Question 24

what id the name of 8th cranial nerve and what is its type

Answer 24

vestibulocochlear
sensory

Question 25

what are the parts of vestibulocochlear nerve

Answer 25

vestibular: balance
cochlear: hearing

Question 26

what is the 9th cranial nerve and its type

Answer 26

glossopharyngeal
mixt