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Anatomy Exam 3 Blue Boxes > Cranial Nerve Facts > Flashcards

Cranial Nerve Facts Flashcards

1
Q

what are the components of CN III?

A

somatic motor and visceral motor

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2
Q

where are the cell bodies of CN III?

A

-somatic: midbrain
-visceral: presynaptic –> midbrain
postsynaptic –> ciliary ganglion

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3
Q

where does CN III exit the cranium?

A

superior orbital fissure

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4
Q

what is the motor function for CN III?

A
  • innervates superior, inferior, and medial recti
  • innervates inferior oblique
  • innervates levator palpebrae superioris
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5
Q

what is the sensory innervation for CN III?

A

parasympathetic to sphincter pupillae and ciliary muscles that constricts pupil

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6
Q

what components does CN IV have?

A

somatic motor

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7
Q

where are the cell bodies for CN IV?

A

midbrain

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8
Q

where does CN VI exit the skull?

A

superior orbital fissure

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9
Q

what is the function of CN IV?

A

motor to superior oblique

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10
Q

what are the branches of CN V?

A
  • ophthalmic (V1)
  • maxillary (V2)
  • mandibular (V3)
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11
Q

what are the components of CN V?

A
  • somatic sensory (V1,2, &3)

- special motor (V3 only)

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12
Q

where are the cell bodies for CN V?

A
  • somatic sensory: trigeminal ganglion

- special motor: pons

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13
Q

where does CN V1 exit the skull?

A

superior orbital fissure

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14
Q

where does CN V2 exit the skull?

A

foramen rotundum

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15
Q

where does CN V3 exit the skull?

A

foramen ovale

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16
Q

what is the function of CN V1?

A

sensation from cornea, skin of forehead, scalp, eyelids, nose, mucosa of nasal cavity, and paranasal sinuses

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17
Q

what is the function of CN V2?

A

sensation from skin of face over maxilla, upper lip, maxillary teeth, mucosa of nose, maxillary sinuses, & palate

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18
Q

what is the function of CN V3?

A
  • sensory: skin over mandible, lower lip, mandibular teeth, temporomandibular joint, mucosa of mouth and anterior 2/3 of tongue
  • motor: muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani
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19
Q

what are the components of CN VI?

A

somatic motor

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20
Q

where are the cell bodies for CN VI?

A

pons

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21
Q

where does CN VI exit the skull?

A

superior orbital fissure

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22
Q

what is the function of CN VI?

A

motor to lateral rectus

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23
Q

what are the components of CN VII?

A
  • somatic motor
  • special sensory
  • visceral motor
24
Q

where are the cell bodies for CN VII?

A

-somatic motor: pons
-special sensory: geniculate ganglion
-visceral motor: presynaptic –> pons
postsynaptic –>pterygopalatine ganglion & submandibular ganglion

25
where does CN VII exit the skull?
internal acoustic meatus --> facial canal --> stylomastoid foramen
26
what are the somatic motor functions of CN VII?
-somatic motor: muscles of facial expression and scalp, stapedius muscle of inner ear, stylohyoid, & posterior belly of digastric
27
what is the special sensory function of CN VII?
-special sensory: taste from anterior 2/3 of tongue and palate
28
what are the visceral motor functions of CN VII?
-visceral motor: parasympathetic of submandibular and sublingual salivary glands, lacrimal gland, and glands of nose and palate
29
what are the branches of CN VIII?
- vestibular | - cochlear
30
what are the components of CN VIII?
special sensory
31
where are the cell bodies of CN VIII?
- vestibular: vestibular ganglion | - cochlear: spiral ganglion
32
where does CN VIII exit the skull?
internal acoustic meatus
33
what are the functions of CN VIII?
vestibular sensations from semicircular ducts, utricle, and saccule (position of head)
34
what are the components of CN IX?
- somatic motor - visceral motor - visceral sensory - special sensory - somatic sensory
35
where are the cell bodies for CN IX?
- somatic motor: medulla - visceral motor: medulla (pre) & otic ganglion (post) - visceral sensory: superior ganglion - special/somatic sensory: inferior ganglion
36
where does CN IX exit the skull?
jugular foramen
37
what is the somatic motor function of CN IX?
motor to stylopharyngeus (swallowing)
38
what is the visceral motor function of CN IX?
parasympathetic to parotid gland
39
what is the visceral sensory function of CN IX?
visceral sensation from parotid gland, carotid body and sinus, pharynx, & middle ear
40
what is the special sensory function of CN IX?
taste from posterior 1/3 of tongue
41
what is the somatic sensory function of CN IX?
cutaneous sensation from external ear
42
what are the components of CN X?
ALL 5
43
where are the cell bodies of CN X?
- SM: medulla - VM: medulla (pre) & near viscera (post) - VS: inferior ganglion - SpS: inferior ganglion - SS: superior ganglion
44
where does CN X exit the skull?
jugular foramen
45
what is the SM function of CN X?
motor to muscles of pharynx, intrinsic muscles of larynx, palate, & striated muscle in superior 2/3 of esophagus
46
what is the VM function of CN X?
parasympathetic to smooth muscle and glands of trachea, bronchi, digestive tract, coronary arteries, and heart nodes
47
what is the VS function of CN X?
visceral sensation from base of tongue, pharynx, larynx, trachea, bronchi, heart, esophagus, stomach, and intestine until splenic flexure
48
what is the SpS function of CN X?
taste from epiglottis and palate
49
what is the SS function of CN X?
sensation from auricle, external acoustic meatus, dura mater of posterior cranial fossa
50
what is the component of CN XI?
somatic motor
51
where are the cell bodies of CN XI?
spinal cord
52
where does CN XI exit the skull?
jugular foramen
53
what is the function of CN XI?
motor to sternocleidomastoid and trapezius
54
what component does CN XII have?
somatic motor
55
where are the cell bodies for CN XII?
medulla
56
where does CN XII exit the skull?
hypoglossal canal
57
what is the function of CN XII?
motor to intrinsic and extrinsic muscles of tongue except palatoglossus

Anatomy Exam 3 Blue Boxes (12 decks)

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