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Anatomy EXAM 1 > 10-16 CRANIAL NERVES > Flashcards

10-16 CRANIAL NERVES Flashcards

1
Q

[ OLFACTORY ] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled thru?&raquo_space; What special structure sits on top of this “Foramen”?
  3. Component
  4. Main Structures/Function for each Component
A

[OLFACTORY] n.

  1. (CN1)
  2. [Ethmoid Cribriform Plate] (transmits CN1 tiny branches)» which has [Crista Galli/ Crown of Cock] sitting on top projecting superiorly
  3. SVA
  4. SVA= Olfactory nasal mucosa / SMELL
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2
Q

[ OPTIC ] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Main Structures/Function for each Component
  5. Name the Nucleus and their location
A

[OPTIC] n.
1. CN2

  1. Optic Foramen canal
  2. SSA
  3. SSA= Vision (Rods & Cones)
  4. [Lateral Geniculate Nucleus] –>Thalamus
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3
Q

[OCULOMOTOR ] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component [2]
  4. Function for each Component [2]
  5. Name the Nucleus and their location [2]
A

[OCULOMOTOR] n.

  1. CN3
  2. SUPerior Orbital fissure {CN 3,4,5B1,6}
  3. ## [GVE parasympathetic] and GSE
  4. A: [GVE psmp]=uses ciliary ganglion to innervate ciliary muscle(fattens lens) & sphincter pupillae

  1. A: [Edinger-Westphal] nc–>MIDBRAIN

B: Oculomotor nc —>MIDBRAIN

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4
Q

[TROCHLEAR] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Function for each Component
  5. Name the Nucleus and its location
A

[TROCHLEAR] n.

1) CN4
- ——————————————————————————–
2) SUPerior Orbital fissure {CN 3,4,5B1,6}
- ——————————————————————————–
3. GSE

  1. GSE= SUPerior Oblique eyeball muscle
  2. Trochlear nc—->MIDBRAIN
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5
Q

Which Cranial nerves transmit thru the Superior Orbital Fissure of the ____ skull [4]

A

SUPerior Orbital fissure = FRONT SKULL

CN 3 / 4 / 5B1 / 6

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6
Q

[TriGeminal] nerve B1 vs. B2 vs. B3

  1. Cranial Nerve # ?
  2. Foramen Traveled for each 3?
  3. Component [2]
  4. Main Structures/Function for each Component [2]
  5. Name the Nucleus and their purposes [3]
A

[TriGeminal] n.
1. CN5
———————————————————————————
2.
B1/Opthalmic = SUP Orbital fissure {CN 3,4,5B1,6]
B2/Maxillary = Foramen Rotundum
B3/mandibular= Foramen Ovale
———————————————————————————
3. GSA and SVE
———————————————————————————
4.
•GSA=
Pain & Temp for Most Head & Face

•••SVE= Motor to ALL mastication muscles, ANT Belly Digastric & [First Arch muscles] reflex

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7
Q

Describe what the GSA component of the
[Trigeminal/CN__] innervates?

ºB1/Opthalmic

ºB2/Maxillary [3]

ºB3/mandibular [3]

A

[Trigeminal/CN5] ALL BRANCHES
GSA= face SENSORY

ºB1(upper face skin)

ºB2(mid face skin, upper teeth,lower nose) /

ºB3 (lower face/jaw/mouth, outer ear pinna,
ANT 2/3 tongue-Touch)

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8
Q
  • Chorda Tympani n. *
    1) What Parent nerve does this come from and which Component is it?

2) What stuff does this innervate?
3) Where exactly does this nerve branch from its Parent?

A

“Drink 7 Up…You’ll TASTE it”

1) Facial CN7 [SVA]
2) [Tongue TASTE]
3) Branches from Facial CN7 BEFORE CN7 exits [Stylomastoid] process

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9
Q

[ABDUCENS] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Main Structures/Function for each Component
  5. Name the Nucleus and its location
A

[ABDUCENS] n.

  1. CN6
  2. SUPerior Orbital Fissure {3,4, 5B1, 6}
  3. GSE
  4. GSE= motor to Lateral Rectus muscle {LR6}
  5. Abducens Nucleus —-> Pontomedullary junction in Pons
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10
Q

B: LR6 (SO4) 3

A

B:
ºLateral Rectus = CN6/Abducens

ºSUPerior Oblique = CN4/Trochlear

ºCN3/OCCULOMOTOR = ALL OTHER EYEBALL MUSCLES

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11
Q

Name the Nerve you’d use….

A: …To See

B: ….To “Focus” & accommodate after seeing [which associated muscle? ]

C: …Looking at BRIGHT Light [which associated muscle?]

D: …lifting eyelids & opening eyes

E: ….FORCING ur eyes shut!

A

Nerve you’d use…

A:…to see= CN2/OPTIC

B:…to “Focus” & accommodate after seeing= CN3/Occulomotor [Ciliary muscle]

C: …looking @ BRIGHT light= CN3/Occulomotor [Sphincter Pupillae m.]

D:..lifting eyelids= CN3/Occulomotor [ Levator Palpebrae m.]

E: …FORCING eyes shut!= Facial CN7

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12
Q

1) Which nerve system opens the pupil wide?
2) Which nerve system and muscle opens EYELIDS extra wide?

3) Explain eye movement directionality of
[Inferior Oblique m.] & the [Superior Oblique m.]

A

1) Sympathetic nervous system
2) Sympathetic nervous system

3) I O U O, SO DO
Inferior Oblique Up Out
Superior Oblique Down Out

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13
Q

Which 2 Foramen does the Facial CN7 transmit thru?

A

1st: Internal auditory meatus [located in the temporal bone]
2nd: Stylomastoid Foramen

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14
Q

List the 5 Components of [Facial CN7] and EACH of their purposes

  1. GVA
  2. SVA
  3. GVE [4]
  4. SVE [4]
  5. GSA

B: Name the Nucleus that correspond to each component

A

[Facial CN7] Components

  1. GVA= soft palate deep sensation—>[Lower NST]
  2. SVA=Tongue TASTE from anterior 2/3–> [upper NST]
  3. GSA= Pain & Temp of [Ear pinna] –>[Spinal Trigeminal Nucleus of V]
  4. [GVE]= motor to submand., subling, lacrimal & [nasal mucosa] glands—> [SUP salivary nucleus]
  5. SVE= motor to facial express muscle, POST belly digastric, stylohyoid, stapedius –> [motor nuc. of 7]
    - ———————————————————————————

B: [GVE/parasympathetic] & SVE

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15
Q

A: Explain the granddaughter branches [5 branches] of the B3 mandibular daughter branch?

B: What is the Parent nerve of this B3 mandibular daughter nerve?

C: Which granddaughter branches goes INTO the mandible and which go UNDER the mandible?

A

A: B3^mandibular n.———->

  1. Meningeal branch
  2. Buccal n.
  3. Auriculotemporal
  4. Inferior Alveolar (—>Mental when emerging)
  5. Lingual

B: [Trigeminal/CN5]

C: INTO mandible = Inferior alveolar n..

UNDER mandible to tongue = Lingual n.

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16
Q

1) Petrous bone

2) What parent bone is this bone found?
3) What is its clinical significance?

A

1) MOST DENSE cranial bone that [internal acoustic meatus] is found in

2) Temporal bone
3) Houses [internal acoustic meatus] where Facial CN7 transmits

17
Q

The ____ ____n. gives way to the Pterygopalatine ganglion found from CN__. This in turn gives way to a n. tht travels to innervate the ____ and _____ glands

A

The GREATER PETROSAL n. gives way to Pterygopalatine ganglion found from CN7, which turns into a n. tht innervates the Lacrimal and Nasal mucosa glands

18
Q

1) List the 4 Cranial Parasympathetic Ganglion

…2)What Cranial nerve runs to it,

[T or F] CN5 is a parasympathetic Fiber itself
———————————————————————————-

What component does all this fall under?

A

Cows Poop On Shoes = Ciliary / Pterygopalentine / Otic / Submandibular = [GVE]

A: CN3—-(runs with CN5 nasocilliary n.)—> Ciliary ganglion

B:CN7 Grtr Petrosal—(runs w/CN5 zygomatic bnch)
–>Pterygopalentine ganglion–>lacrimal & mucosal glands

C: CN9–(runs w/CN5 Auriculotemporal bnch)—>Otic ganglion–>Parotid glands!

FALSE! CN5 is NOT a parasympathetic fiber
———————————————————————————-

[ GVE/parasympathetic ]!!!

19
Q

What occurs after the Facial CN7 exits the [internal auditory meatus] along with CN__ [3]

A

Once Facial CN7 exits [internal auditory meatus] (with [CN8/vestibulochoclear/auditory])

1st - visceral motor fibers of Facial CN7 divides into
[Grtr Petrosal n.] & [Chorda Tympani]

2nd- [Grtr Petrosal n.] innervates lacrimal, nasal & Palatine glands

3rd- [Chorda Tympani] innervates submandibular & sublingual Salivary glands

20
Q

1) Describe the Branchial Motor Component of the ___nerve [CN__]
2) What are the muscles of facial expression? [3]
3) Which component does this belong to?

A

Branchial Motor Component of Facial CN7

ºVoluntary MOTOR control of facial expression muscles, POST belly digastric, stylohyoid & stapedius

2) Buccinator, BOTH Occipitalis, platysma
3) SVE

21
Q

1) Name nerves working in branchial motor component OF Facial CN7? [7]
2) Which component does this belong to?

A

+ [POST auricular bnch] + [n. to POST Belly Digastric & Stylohyoid]

THe=Temporal bnch
Zombie= Zygomatic bnch
Bit= Buccal bnch
My= Mandibular bnch

Cat= Cervical bnch

2) SVE

22
Q

A: What is Bell’s Palsy caused by?

B: Pt that has Dry Mouth but still can cry has a lesion where at?

A

A: Facial CN7 irritation

B: Facial Canal (somewhere between [Grtr Petrosal n.] and [Chorda Tympani n.] )

23
Q

[Vestibulocochlear Auditory] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Function for each Component [2]
  5. Name the Nucleus and their location [2]
A

[Vestibulocochlear Auditory] n.

  1. CN8
  2. internal auditory meatus [along with CN7]
  3. SSA [cochlear n. vs. Vestibular n.]
  4. A: SSA cochlear = [Organ of Corti] in cochlear duct
    B: SSA vestibular = semicircular canals
  5. A: (2 cochlear Nuclei)—> MEDULLA
    B: (4 Vestibular Nuclei)—-> MEDULLA
24
Q

[Glossopharyngeal] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
3. Components and Nuclei associated
ºGVA [3]
ºSVA
ºGVE
ºSVE
ºGSA
  1. Function for each Component
A

[Glossopharyngeal] n.

  1. CN9
  2. Jugular Foramen
  3. GVA[3] / SVA / GSA / GVE(hitches ride) / SVE
  4. ºGVA[3]=[bp via carotid sinus], sensory soft palate, pharynx —>{LOWER NST}

ºSVA= Tongue TASTE—-> {Upper NST}

ºGSA= Pain & Temp of Ear Pinna (via [Spinal Trigeminal nucleus of V] )

ºGVE= “GLOAP”–> parotid salivary gland{secretomotor}—>{inf. salivatory nucleus]

ºSVE = Stylopharyngeaus m. —> [nucleus Ambiguous]

“GLOAP”= Glossopharyngeal n. uses [lesser petrosal n.] to get to otic ganglion—>then uses Auriculotemporal n. to get to PAROTID SALIVARY GLAND destination

25
Q

Which 3 Cranial Nerves transmit thru [Jugular Foramen]?

A

CN 9, 10 and 11

26
Q

Which 4 Cranial Nerves are Parasympathetic ?

A

3, 7, 9 and 10 = Parasympathetic CN =

27
Q

[VAGUS] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Components [5]
A

[VAGUS] n.
1. CN10

  1. Jugular Foramen [along with 9,10,11]
  2. GVA / SVA / GSA / GVE / SVE
28
Q 
A: What are is Function for each Component of the Vagus Nerve [CN\_\_] 
ºGVA [4]
ºSVA
ºGVE [2]
ºSVE [4]

ºGSA

B: List the Associated Nucleus with each

C: What are the 2 Vagus CN10 [SVE] branches & what do they innervate? Which one wraps around the Aortic Arch?

A

VAGUS n. = CN10

ºGVA= DEEP sensory to (ALET) abd, larynx, esophagus & trachea—> {Lower NST}

ºSVA= Taste buds @ epiglottis [back of throat]–> {upper NST}

ºGSA = Pain & Temp of Ear Pinna (via [Spinal Trigeminal nucleus of V] )

ºGVE= [smooth muscle respiratory or GI ] & [controls HR via SA /AV node]—>{Dorsal Motor nc. of 10}

ºSVE—> Nucleus Ambiguous
1. All pharynx muscles (except stylopharyngeus)
2. All PALATE muscles (except tensor palatini )[includes Palatoglossus]
3. [Larynx & Cricothyroid]
———————————————————————————-
C: 2 SVE branches:
[SUP Laryngeal]–>[External laryngeal branch]
–>Cricothyroid

[Recurrent Laryngeal]—>Intrinsic Larynx*** = RL wraps around the Aortic Arch!

29
Q

[Spinal Accessory] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Function for each Component
  5. Name the Nucleus and its location
A

[Spinal Accessory]
1. CN11

  1. Jugular Foramen AND Foramen Magnum
  2. SVE
  3. SVE=motor to Sternocleidomastoid & Traps
  4. [Spinal Accessory nucleus]—->(C1-C5)Spinal Cord
30
Q

Spinal accessory n. has a ___ root and a _____ root, both that consist of _____ motor fibers

A

Spinal Accessory n. has a CRANIAL root and a SPINAL root both which consist of BRANCHIAL motor fibers

31
Q

1) Explain which parts of the Spinal Accessory CN11 exit Jugular Foramen vs. Foramen Magnum?
2) What would cause an Ipsilateral deficit of the shoulder?

A

1) Brainstem exits via Jugular Foramen
vs.
[C1-5]Roots exit via Foramen Magnum

2) one sided spinal accessory CN11 lesion

32
Q

[Hypoglossal] nerve

  1. Cranial Nerve # ?
  2. Foramen Traveled?
  3. Component
  4. Function for each Component [2]
  5. Name the Nucleus and its location
A

[Hypoglossal] n.
1. CN12

  1. Hypoglossal Canal
  2. GSE
  3. GSE= Intrinsic/EXtrinsic tongue muscles mvmnt
  4. Hypoglossal Nucleus —> Rostral MEDULLA
33
Q

All muscles ending with “…..glossus” are innervated by the ________ n. EXCEPT FOR THE ____ n.!

A

All muscles ending with “….glossus” are innervated by HYPOGLOSSAL CN12 n. EXCEPT FOR [PALATOGLOSSUS n.]

34
Q

Name which nerve is lesioned in these dz

A: Tongue weak on one side
B: Shoulder Weak on one side
C: Bells Palsy/Facial Droop
D: Acute Cross-eyed / abducent Direction of gaze in 1 eye

E: Down & Out gaze with dilated pupil in 1 eye

A

A: [Hypoglossal CN12] lesion

B: [Spinal Accessory CN11] lesion
C: [Facial CN7] palsy

D: [Abducens CN6] palsy

E: [Occulomotor CN3] palsy

35
Q

Name the 12 Cranial Nerves in Order

A 
" Oh, oh, Oh to touch and feel Very good Velvet...Such Heaven" 
CN1. Olfactory 
CN2. optic 
CN3. Occulomotor 
CN4. Trochlear 
CN5. Trigeminal

CN6. Abducens
CN7. Facial

CN8. Vestibulocochlear Acoustic

CN9. Glossopharyngeal

CN10. VAGUS
…….
CN11. Spinal Accessory
CN12. Hypoglossal

36
Q

Describe These Cranial Nerve Componenents

ºGSE

ºGSA [3]

ºGVE / _______ [3]

ºGVA

ºSVE [2]

ºSVA [2]

ºSSA [3]

A

ºGSE= motor—>voluntary muscle

ºGSA= sensation FROM skin/muscle/joints

ºGVE/PARASYMPTHC=MOTOR to smooth muscle, [blood vessels] & glands

ºGVA= Visceral Sensation & pain FROM internal organs/Guts

ºSVE= voluntary motor —> [pharyngeal arch/Gill muscles] OR Facial Xpression m. !

ºSVA= TASTE & SMELL

ºSSA= vision / hearing / Balance

37
Q

Just Name the Functional Components for Each Cranial Nerve

  1. Olfactory
  2. Optic
  3. Occulomotor [2]
  4. Trochlear
  5. Trigeminal * [2]
  6. Abducens
  7. Facial * [5]
  8. Acoustic/Vestibulocochlear
  9. Glossopharyngeal [5]
  10. Vagus [5]
  11. Spinal Accessory
  12. Hypoglossal
A
  1. Olfactory = SVA
  2. Optic = SSA
  3. Occulomotor = GVE / GSE
  4. Trochlear = GSE
  5. Trigeminal = SVE / GSA
  6. Abducens= GSE
  7. Facial = GVA / SVA / GVE / SVE / GSA
  8. Acoustic/Vestibulocochlear = SSA
  9. Glossopharyngeal = GVA/ SVA / GVE / SVE / GSA
  10. Vagus= GVA / SVA / GVE / SVE / GSA
  11. Spinal ACCESSORY= SVE
  12. Hypoglossal = GSE
38
Q

Which Cranial Nerves are responsible in the following and why:

A: CHEWING Food

B: SWALLOWING food [2]

C: Talking :-)

A

B: SWALLOWING Food=
ºCN9–>motor to stylopharyngeus SVE component
º[CN10 Vagus]
———————————————————————————-
C: Talking :-) = [CN10 Vagus] —-> Larynx

39
Q

” SVE Sara & Just ___ me 2 Geese!…and ____ some Gas GE!”

A

“SVE SSA & Just [GVE me 2 GSE]!…and dude [SVE some GSA] GE!

Anatomy EXAM 1 (14 decks)

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