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Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

CN V goes through

A

Trigeminal
V1 Ophthalmic, through sup orbital fissure
V2 Maxillary, Foramen Rotundum
V3 Mandibular Foramen Ovale

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2
Q

V1 name and branches what it does

A

Ophthalmic: GSA

  1. Meningeal
  2. Frontal…supraorbital and suprartrochlear
  3. Lacrimal
  4. Nasocillary

FNL
cutaneous: Lacrimal, Infratrochlear, External nasal, and the 2 S’s (LIESS)

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3
Q

V2 name and branches what it does

A 
Maxillary: GSA 
1. Meningeal
Cutaneous: Infraorbital, Zygomaticofacial, Zyogomaticotemporal Cutaneous (MIZZ)
GSA 
1 Pterygopalantine 
2. Zygommatic: carries facials PSNS 
3. Post-Sup Alverolar
"Max is on PZP"
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4
Q

V3 name and branches what it does

A 
Mandibular: Cutaneous BAM
Buccal
Auriculotemporal 
SVE
Mental
Lingual 
Inferior alveolar (which turns into Mental)
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5
Q

V1 function

A

GSA

  1. Frontal: sensory to eyeball and branches for cutaneous
  2. Lacrimal: sensory to lacrimal gland, allows Facial verve to bring post gang PS fibers
  3. Nasocillary: goes Through ciliary ganglion, has branches Long ciliary (bypasses ciliary ganglion) Sensory to eyeball
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6
Q

Ciliary ganglion

A

Receives PerGang PS, Post gang PS Cell Bodies are in ciliary ganglion the pregang are from CN3-Edinger-Westphal
Receives Post gang SNS from Int Carotid (ophthalmic art)
V1 GSA passes through
Give off short cilary nerves to eyeball

PSNS and SNS: pupillary reflex?

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7
Q

V2 function

A

GSA
1 Pterygopalantine: has branches that hang down into the pterygopalantine ganglion, allows for Post gang PS (that synapsed in pt ganglion, from Facial) to go to Zygomatic branch. Form the Pt ganglion it supplies GSA to roof of mouth, soft palate Through Greater and Lesser Palatine
2. Zygommatic: carries postgang PS fibers from above to lacrimal gland. Supplies cutaneous to boney part of check
3. Post-Sup Alverolar GSA to upper teeth, maxillary sinus

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8
Q

V3 Function

A

SVE GSA
Buccal: mucous membranes of check, gums Sensory GSA
Auriculotemporal: carries Post gang PS (from glosso) to Parotid gland. Supplies Sensory GSA to parotid gland
SVE: muscles of mastication, mylohyoid, ant digastric, Tensor tympani, Tensor Veli Palatini
Mental
Lingual: GSA sensory to ant 2/3 of tongue, passes through Submandibular ganglion
Inferior alveolar (which turns into Mental)

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9
Q

Trigeminal

A

SVE, GSA

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10
Q

CN4 name, goes through

A

Trochlear, emerges Dorsal side of brain stem and CROSSES over….only one
goes trough Sup Orbital Fissure
does NOT go through anulus ring

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11
Q

CN4 does

A

GSE, sup oblique muscle

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12
Q

CN3 name, goes through

A

Oculomotor, Sup Orbital Fissure

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13
Q

CN 3 does

A

GSE, GVE
motor: all eye muscles (medial, sup, inf rectus, inf oblique, and levator Palpebrae superioris)
GVE: PSNS, pre gang cell bodies in Edniger Westphal nucleus and POSTgang cell bodies in ciliary ganglion. post gang leave ciliary ganglion on short ciliary nerve to eye MIOSIS and accommodation

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14
Q

CN2 name goes through

A

Optic, optic canal forms optic chiasma

bipolar cells

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15
Q

CN2 does

A 
SSA, vision
does NOT join brain stem 
at chiasma nasal side crosses and temporal side does not
goes through optic tract
synapse in Lateral Geniculate
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16
Q

CN1 name, goes through

A

Olfactory cribiform plate of ethmoid bone
synapse in olfactory bulb to olfactory tract
shortest nerve
bipolar cells

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17
Q

CN1 does

A

SVA, smell

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18
Q

SVA

A

special visceral afferent,

smell and taste

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19
Q

SSA

A

special somatic afferent

vision, hearing, balance

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20
Q

SVE

A 
Special Visceral Efferent 
muscle of mastication
facial expression
styopharyngeus
pharynx, larynx
upper 1/3 of esophagus
*muscle derived from emloryonic brachial arches
21
Q

GSA

A

General Somatic Afferent

skin and mucous membrane of head and neck

22
Q

GSE

A

General Somatic Efferent
Extrinsic muscle of eye
intrinsic and extrinsic muscle of tongue
*Muscle derived fro myotome regions of embryonic somites

23
Q

GVA

A

General Visceral Afferent
sensation from mucous membrane
carotid body and sinus
salivary glands

24
Q

CN6 EVERYTHING!

A

Abducens
GSE
enters Sup orbital fissure
supplies motor to Lateral Rectus

25
Q

CN 7 names goes through

A

Facial

enters the internal acoustic meatus runs through facial canal exits through stylomastoid foramen

26
Q

CN 7 branches

A 
Temporal
Zygomatic
Buccal
Mandibular
Cervical 
Post auriclar
(To Z By Motor Car)
Greater Petrosal...to nerve to Pterygoid canal
Chorda Tympani (NOT a branch but a "companion") 
Stapedial
27
Q

CN7 does what

A

SVE motor: these branches go to muscles of facial expression and Stapedius

GSA, GVA Has a sensory ganglion: Geniculate ganglion GSA: skin to back of ear, and external acoustic meatus GVA: mucous membranes of nasopharynx

GVE Carries Postgang SNS via deep Petrosal meeting with Greater Petrosal PSNS nerve to nerve to Pterygoid canal, PSNS synapse in pt ganglion —provides SNS to lacrimal gland

SVA and GVE: taste Chorda Tympani (nerve intermedius)
from descending part of facial nerve comes off before stylomastoid foramen crossed tympanic membrane exits through Petrotympanic fissure and joins lingual, Taste of ant 2/3 tongue and PSNS synapse in submandibular ganglion and innervate Sublingual and lingual gland

28
Q

Geniculate Ganglion

A

has peudounipolar cell bodies for SENSORY: GSA, GVA and SVA(taste)
Runs through facial canal, turns, gives off Greater Petrosal

29
Q

Chorda tympani

A

SVA and GVE: taste Chorda Tympani (nerve intermedius)
from descending part of facial nerve comes off before stylomastoid foramen crossed tympanic membrane exits through Petrotympanic fissure and joins lingual, Taste of ant 2/3 tongue and PSNS synapse in submandibular ganglion and innervate Sublingual and lingual gland

30
Q

Facial

A

GSA, GVA, SVA, SVE, GVE

31
Q

Greater Petrosal

A

GVE:
PSNS joins Deep Petrosal (SNS) then nerve to Pterygoid canal, post gang cell bodies are in pt ganglion, pregang synapse in pt ganglion then PS fibers “hitch a ride” on Zygomatic nerve (Maxillary V2) to Lacrimal nerve (Ophthalmic V1) to Lacrimal gland—-provides PSNS to lacrimal gland

32
Q

CN 8 name goes through

A

Vestibulocochlear, enters internal acoustic meatus, remains IN the temporal bone

33
Q

CN8 does

A

SSA, hearing and balance
splints into cochlear–hearing, into spiral ganglion
Vestibular–balance, has vestibular ganglion
Both are Bipolar neurons

34
Q

which CN have Bipolar cells

A

Optic
Olfactory
Vestibulocochlear

35
Q

CN 9 name and goes through

A

Glossopharyngeal, passes through jugular foramen

36
Q

CN9 does

A

GVE: Postgang PSNS to Parotid gland, via tympanic to tympanic plexus SNS joins from carotid plexus to make Lesser Petrosal to Otic ganglion pregang PSNS synapse and Postgang to Parotid gland
GVA: carotid sinus, Pharyngeal (sensation that causes gag reflex)
SVA: taste post 1.3 tongue
SVE: Stylopharyngeus
GSA: Cutaneous sensation external ear

37
Q

Glossopharyngeal

A

GSA, GVA, SVA, SVE, GVE

38
Q

Otic ganglion

A

receives:
Pregang PSNS from glossopharyngeal
Postgang SNS form Carotid plexus
glossopharyngeal to tympanic to tympanic plexus SNS joins from carotid plexus to make Lesser Petrosal to Otic ganglion pregang PSNS synapse and Postgang to Parotid gland

39
Q

CN 10 name goes through

A

Vagus, passes through jugular foramen

40
Q

CN 10 does

A

GSA: sensation external acoustic meatus, dura mater of post cranial fossa

GVA: Visceral sensation base of tongue, pharynx, trachea, bronchi, cardiac, stomach, esophagus, intestine

SVA: Taste from epiglottis and palate (Int SLN)

SVE: motor constrictor muscle of pharynx, motor of gag reflex, intrinsic muscles of larynx, Levator veil palatini, Cricothyroid (Ext SLN)

GVE: PSNS smooth muscle of trachea, bronchi, cardiac muscle

41
Q

Internal SNL

A

SVA taste from epiglottis

42
Q

CN10 branches

A

Superior Laryngeal Nerve Internal and External
Recurrent Laryngeal—-turns into inferior

Recurrent hooks around subclavian on R
around arch of aorta on L

43
Q

Recurrent LN

A

GVA: below VC
SVE: motor to all but cricothyroid

44
Q

CN11 name goes through

A

Accessory Nerve passes through foramen magnum then out jugular foramen
spinal roots that originate from anterior horn of cervical segment

45
Q

CN 11 does

A

GSE: motor to sternocleidomastoid and trapezius
SVE: Cranial component, motor to striated muscle of soft palate, pharynx and larynx

46
Q

CN11

A

SVE, GSE

47
Q

CN12 name passes through

A

hypoglossal passes through hypoglossal canal

48
Q

CN 12 does

A

GSE motor to intrinsic and extrensic muscles of tongue except Palatoglossus
Hypoglossal’s sensory runs back on C1

Anatomy (4 decks)

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