Cranial Nerves Flashcards Preview

Anatomy > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (47):
1

What are the modalities of the nerves

Some
Say
Marry
Money
But
My
Brother
Sas
Big
Brains
Matter
More

2

What are the functions of the olfactory nerves

Olfaction - smell
Special sensory

3

What does the olfactory nerve innervate

Olfactory epithelia

4

What are the function of the optic nerve

Special sensory
Vision

5

What dos the optic nerve innervate

The retina

6

What is the motor aspect of the oculomotor nerve innervate and do

Most of the extraocular
Except lateral rectus or superior oblique
Movement of eyeball

7

What is the parasympathetic contribution of the oculomotor nerve

Pupillary constrictor
Ciliary muscle of the eyeball
Which are both innervated by the ciliary ganglion

8

What does the trochlear nerve do

Motor innervation to the superior oblique extraocular muscle

9

What is the sensory contribution of the trigeminal nerve

Face
Scalp
Conrea
Nasal and oral cavities
Cranial dura mater

General sensation

10

What si the motor aspect of the trigeminal

Muscles of mastication - opening and closing mouth
Tensor tympani muscle - tension of tymp mem

11

What is the action of the abducens nerve

Motor innervation of lateral rectus movement of he eyeball

12

What's the sensory aspect of the facial nerve

Special sensory of taste to the anterior 2/3 of tongue via lingual nerve with chorda tympani

13

What's the Motor aspect of the facial nerve

Muscles of facial expression
Stapedius muscle - tension of ossicles

14

What is the parasympathetic innervation of the facial nerves

Salivary and lacrimal glands via submandibular and pterygopalatine ganglia

15

What's the function of the vestibulocochlear nerve

Sensory to cochlea (hearing) and vestibular apparatus (balance)

16

Where does the Glossopharyngeal supply sensory innervation to

Eustachian tube middle ear - general sensation
Carotid body and sinus - chemo/baroreception
Pharynx and post 1/3 tongue - taste

17

What's it eh motor function of the Glossopharyngeal

Stylophafyngeus
Swallowing

18

What's it eh parasympathetic contribution of the Glossopharyngeal

Salivary glands via otic ganglion

19

What is the vagus sensory innervation

Pharynx larynx oes and external eat - general sensation
Aortic body and arch - chemo/baroreception
Visceral sensation

20

What's it eh motor function of th vagus

Soft palate, larynx, pharynx upper oes
Allowing speech and swallowing

21

What's the parasympathetic contribution of the vagus

Control of cardio, RESP and GI systems

22

What does accessory nerve do

Motor innervation to the scm and trapezius allowing movements of the head and neck

23

What does the hypoglossal nerve do

Motor innervation to intrinsic and extrinsic muscles of the tongue Exceot palatoglosses which is innervated by vagus

24

Where do the nerves originate

1,2 --> brain
3,4 --> midbrain
5 --> pons
6,7,8 --> junction between pons and medulla
9,10,12 --> medulla
11 --> spinal cord

25

What are e parasympathetic cranial nerves

3
7
9
10

26

'What are the parasympathetic ganglion go the head and neck

Ciliary
Sphenopalatine
Su maxillary
Otic

27

What does the ciliary ganglion innervate

Sphincter pupillae which contracts the pupil
Ciliary muscles accommodating near vision

28

What does the pterygopalatine ganglion innervate

Secretomotor to lacrimal gland
Mucous gland of posterosuoeriorly nasal cav
Nasopharynx
Palate

29

What does the submandibular ganglion supply

Secretomotor innervation to submandibular and sublingual glands

30

What does the otic ganglion supply

Innervation tot he parotid gland

31

Where si the otic ganglion situated

Under foramen ovale

32

How does the olfactory nerve leave the cranial cavity

Crubiform plate

33

How does the optic nerve leave cranial cav

Optic canal
(Optic chiasm cross over of sight to visual cortex)

34

How does the oculomotor nerve leave the carnival cav

Pierces dura mater
Through cavernous sinus (gets parasymp from Ica in cav sinus)
Superior orbital fissure

35

What si the course of the trochlear nerve to leave the cranial cav ee

Subarachnoid space
Wall of cav sinus
Superior orbital fissure

36

What is the purse for the trigeminal nerve leaving the cranial cavity

Pons
Middle cranial fossA
Opthalmic - sup orbital fissure
Maxillary - foramen rotundum
Mandibular with motor root - foramen ovale

37

Who does the abducens leave the cranial cav

Pons
Subarachnoid space
Dura mater
Through cav sinus
Superior orbital fissure

38

How does the facial nerve exit the cranial cav

pons motor and sensory root, IAM stylomastoid foramen

39

What are the branches of the facial nerve
Intracranial
Extra cranial

Intracranial
- iam --> geniculate ganglion which branches to greater petrosal, nerve to stapedius and chorda tympani
- stylomastoid formen

Extra cranial
- posterior auricular branch
- motor root terminating in parotid gland

40

What si the course of the Vestibulochoclear nerve

Vestibular and cochlear fibres aggregate and exit via iam

41

What si the course of the Glossopharyngeal nerve

Leaves cranium via jugular foramen
Tympanic nerve arises with sensory and parasymp
You panic plexus --> to otic ganglion

42

What si the course of the vagus nerve

Via jugular foramen
Auricular branch

43

What are the branches that arise form the vagus nerve and what do they supply

Pharyngeal branches - motor innervation to most of pharynx and soft palate

Sup laryngeal nerve - internal (sensory to laryngopharynx and sup larynx) and external ( Cricothyroid)

Recurrent laryngeal nerve - only on right side, hooks under aorta inv intrinsic most larynx

44

What si the course of the accessory nerve

Spinal part - enter cranial cav via formen magnum, meet cranial part and out via jugular foremen

Cranial part - medulla, meet Spinla part out via jugular formen

45

What's si the course of the hypoglossal nerve

Out via hypoglossal canal
Association with Ansa cervicalis

46

What sit he Ansa cervicalis

Contribution form branch of hypoglossal

Partly cervical plexus C1,2,3

Inv depressors of hyoid - stereo hyoid, omohyoid, sterenothyroid

47

What are the cranial nerves

Olfactory
Optic
Oculomotor
Trochlear
Turgeminal
Abducens
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Accessory
Hypoglossal