Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Cranial Nerves > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

Cranial Nerve 1

A

Olfactory nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

CN 1 type

A

sensory
ends in olf bulb
cribriform plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

CN 2 and type

A

Optic

sensory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

CN 2 origin

A

retinal ganglion cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What continues after the optic chiasm

A

optic tract
lateral geniculate body (LGB)
Superior colliculus
primary visual cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

CN 3 and type

A

Oculomotor

Motor (oculomotor nucleus) AND parasymp (edinger-westphal nucleus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

course of C3

A

medial side of cerebral peduncles

sup and inf branch, both enter SOF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what does CN 3 supply?

A

motor-extraocular muscles EXCEPT lat rectus and superior oblique

parasymp-sphincter pupillae muscle of iris
ciliary muscle

constricts pupils and accommodates lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

CN 4

A

Trochlear, motor
most slender, longest
MIDBRAIN
ONLY DORSAL CRANIAL NERVE NERVE IN BRAINSTEM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what does CN 4 supply

A

superior oblique extraoc muscle
injury: when you look down, double vision, weakness of eye (CONTRALATERAL EYE AFFECTED, OPTIC AND ALL OTHER CRANIAL NERVES ARE IPSILATERAL)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

CN 6

A

Abducens
motor
supplies lateral rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

CN 5

A

Trigeminal
Motor
Sensory
Parasymp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Sensory nuclei of CN 5

A

Mesencephalic
Pontine (chief)
Spinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

why does CN 5 have PNS fibres

A

Parasymp fibres from CN 7 hitchhike

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Ophthalmic nerve (CN V1)

A

Sensory: upper face, scalp, eye, sinuses

PNS: ciliary ganglion to eye for accommodation and pupil constriction (short ciliary nerves)

pterygopalatine ganglion to lacrimal

Symp: long ciliary nerves: pupil dilation (via cavernous sinus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Main branches CN V1

A

lacrimal
frontal
nasociliary

17
Q

CN V2

A

Maxillary

sensory: mid face, palate, sinuses, nasopharynx, nose
parasymp: pterygopalatine ganglion: lacrimal gland, mucous glands of nose, palate, nasopharynx
taste: hard and soft palates

18
Q

main branches CN V2

A

zygomatic
infraorbital

minor: nasopalatine (nasal cavity)
greater and lesser palatine (palate)
alveolar (upper teeth)

19
Q

CN V3

A

Mandibular

sensory: lower face, temple, ant 2/3 tongue (general)

Parasymp: submandibular and otic ganglia-submandibular, sublingual, parotid glands

taste: ant 2/3rds tongue
branchiomotor: muscles of mastication, tensors tympani and palati

20
Q

main branches CN V3

A 
auriculotemporal
buccal
mental
lingual
muscular
21
Q

CN 7

A

FACIAL, motor, sensory, parasymp.

motor: muscles of expression, stapedius, stylohyoid, post belly digastric
taste: specific, ant 2/3rds tongue
skin: ext acoustic meatus
sensory: mucous membrane of nasopharynx and palate
parasymp: lacrimal, nasal, palatine, submandibular and sublingual glands

22
Q

motor efferent branches of CN 7

A 
Temporal
zygomatic
buccal
mandibular
cervical
23
Q

CN 8

A

vestibulo cochlear
sensory

vestibulo: starts at vestibular ganglion, ends at vestibular nucleus
cochlear: cochlear ganglion, ends at cochlear nucleus

both leave brainstem and enter int acoustic meatus (pass with CN 7)

24
Q

Facial nerve nuclei

A

motor: motor nucleus of VII
sensory: nucleus solitarius, gustatory nucleus
parasymp: superior salivatory and lacrimal nucleus

25
Q

what do the fibres of the motor nucleus CN 7 create

A

facial colliculus in floor of 4th vent
passes through int acoustic meatus with CN 8
widens in medial middle ear: geniculate ganglion (taste and salivation), turns sharply (chorda tympani)

emerges through stylomastoid foramen: supplies muscles of facial expression

26
Q

CN 9

A

glossopharyngeal

nuclei:

motor: nucleus ambiguus
sensory: spinal nucleus of trigeminal, tractus solitarius
parasymp: inferior salivatory

supplies tonsil, palate, post 1/3 tongue
jugular foramen

27
Q

CN 9 distribution

A

motor:
stylopharyngeus

sensory:
carotid body and sinus-carotid sinus branch
pharyngeal branch-oropharynx
tympanic branch-middle ear and inner ear
lingual-taste post 1/3 tongue, special
tonsillar-tonsil and palate
external ear
28
Q

Vagus

A

CN 10
Wandering

motor: nucleus ambiguus
sensory: nucleus solitarius
parasymp: dorsal nucleus of vagus

cardiac and recurrent laryngeal branches (vocal cords)
jugular foramen and through carotid sheath in neck

29
Q

distribution of vagus

A

motor: pharyngeal constrictor muscles, intrinsic muscles of larynx, muscles of palate
sensory: tongue, pharynx, larynx, thoracoabdominal viscera, auricle, ext aud meatus, meninges of post cranial fossa
parasymp: smooth muscles of trachea, bronchi, GI tract, heart

30
Q

Accessory

A

11
2 origins: cranial: nucleus ambiguus
spinal root: accessory nucleus from spinal cord (C1-C5)

motor: nucleus ambiguus

motor nerve

sternocleidomastoid
trapezius
striated muscles soft palate, pahrynx, larynx via fibres that join CN 10

31
Q

Hypoglossal

A

12

motor nerve (motor nucleus: hypoglossal nucleus)

tongue (intrinsic) and extrinsic muscles (genioglossus, styloglossus, hyoglossus)
and infrahyoid muscles

Cranial Nerves (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions