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Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What are the modalities of the nerves

A 
Some 
Say 
Marry 
Money 
But 
My
Brother
 Sas 
Big 
Brains 
Matter
More
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2
Q

What are the functions of the olfactory nerves

A

Olfaction - smell

Special sensory

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3
Q

What does the olfactory nerve innervate

A

Olfactory epithelia

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4
Q

What are the function of the optic nerve

A

Special sensory

Vision

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5
Q

What dos the optic nerve innervate

A

The retina

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6
Q

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

A

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

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7
Q

What is the parasympathetic contribution of the oculomotor nerve

A

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

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8
Q

What does the trochlear nerve do

A

Motor innervation to the superior oblique extraocular muscle

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9
Q

What is the sensory contribution of the trigeminal nerve

A 
Face 
Scalp
Conrea
Nasal and oral cavities 
Cranial dura mater

General sensation

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10
Q

What si the motor aspect of the trigeminal

A

Muscles of mastication - opening and closing mouth

Tensor tympani muscle - tension of tymp mem

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11
Q

What is the action of the abducens nerve

A

Motor innervation of lateral rectus movement of he eyeball

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12
Q

What’s the sensory aspect of the facial nerve

A

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

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13
Q

What’s the Motor aspect of the facial nerve

A

Muscles of facial expression

Stapedius muscle - tension of ossicles

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14
Q

What is the parasympathetic innervation of the facial nerves

A

Salivary and lacrimal glands via submandibular and pterygopalatine ganglia

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15
Q

What’s the function of the vestibulocochlear nerve

A

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

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16
Q

Where does the Glossopharyngeal supply sensory innervation to

A

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

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17
Q

What’s it eh motor function of the Glossopharyngeal

A

Stylophafyngeus

Swallowing

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18
Q

What’s it eh parasympathetic contribution of the Glossopharyngeal

A

Salivary glands via otic ganglion

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19
Q

What is the vagus sensory innervation

A

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

20
Q

What’s it eh motor function of th vagus

A

Soft palate, larynx, pharynx upper oes

Allowing speech and swallowing

21
Q

What’s the parasympathetic contribution of the vagus

A

Control of cardio, RESP and GI systems

22
Q

What does accessory nerve do

A

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

23
Q

What does the hypoglossal nerve do

A

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

24
Q

Where do the nerves originate

A 
1,2 --> brain 
3,4 --> midbrain
5 --> pons 
6,7,8 --> junction between pons and medulla
9,10,12 --> medulla 
11 --> spinal cord
25
Q

What are e parasympathetic cranial nerves

A

3
7
9
10

26
Q

‘What are the parasympathetic ganglion go the head and neck

A

Ciliary
Sphenopalatine
Su maxillary
Otic

27
Q

What does the ciliary ganglion innervate

A

Sphincter pupillae which contracts the pupil

Ciliary muscles accommodating near vision

28
Q

What does the pterygopalatine ganglion innervate

A

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

29
Q

What does the submandibular ganglion supply

A

Secretomotor innervation to submandibular and sublingual glands

30
Q

What does the otic ganglion supply

A

Innervation tot he parotid gland

31
Q

Where si the otic ganglion situated

A

Under foramen ovale

32
Q

How does the olfactory nerve leave the cranial cavity

A

Crubiform plate

33
Q

How does the optic nerve leave cranial cav

A

Optic canal

Optic chiasm cross over of sight to visual cortex

34
Q

How does the oculomotor nerve leave the carnival cav

A

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

35
Q

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

A

Subarachnoid space
Wall of cav sinus
Superior orbital fissure

36
Q

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

A 
Pons 
Middle cranial fossA
Opthalmic - sup orbital fissure 
Maxillary - foramen rotundum 
Mandibular with motor root - foramen ovale
37
Q

Who does the abducens leave the cranial cav

A 
Pons 
Subarachnoid space
Dura mater
Through cav sinus 
Superior orbital fissure
38
Q

How does the facial nerve exit the cranial cav

A

pons motor and sensory root, IAM stylomastoid foramen

39
Q

What are the branches of the facial nerve
Intracranial
Extra cranial

A

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
Q

What si the course of the Vestibulochoclear nerve

A

Vestibular and cochlear fibres aggregate and exit via iam

41
Q

What si the course of the Glossopharyngeal nerve

A

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

42
Q

What si the course of the vagus nerve

A

Via jugular foramen

Auricular branch

43
Q

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

A

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
Q

What si the course of the accessory nerve

A

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
Q

What’s si the course of the hypoglossal nerve

A

Out via hypoglossal canal

Association with Ansa cervicalis

46
Q

What sit he Ansa cervicalis

A

Contribution form branch of hypoglossal

Partly cervical plexus C1,2,3

Inv depressors of hyoid - stereo hyoid, omohyoid, sterenothyroid

47
Q

What are the cranial nerves

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

Anatomy (44 decks)

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