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Anatomy Unit 3 > Dry Lab Cranial Nerves > Flashcards

Dry Lab Cranial Nerves Flashcards

1
Q

What are the components of cranial nerve 3?

A

somatic motor and visceral motor

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2
Q

what is the innervation of CN 3 somatic motor?

A

extraoccular muscles (superior, medial, inferior rectus, inferior oblique) and levator palpebrae superioris

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3
Q

what is the innervation of CN 3 visceral motor?

A

intraoccular muscles, ciliary body, sphincter pupillae

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4
Q

where does CN 3 attach/originate?

A

mid brain at the superior colliculus level

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5
Q

where does the CN 3 go through?

A

supraorbital fissure

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6
Q

what are the general functions of CN 3?

A

eye movement and lens adjustment

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7
Q

what are the components of CN 5?

A

somatic motor for divison 3
somatic sensory for all divisions

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8
Q

what is the somatic motor innervation of CN 5?

A

division 3 to the temporalis, masseter, medial and lateral pterygoid, tensor veli palatini, tensor tympani, anterior digastric, and mylohyoid

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9
Q

what is the somatic sensory innervation of CN 5?

A

division 1: orbit, and 1/2 of anterior scalp and eye
division 2: maxillary
division 3: all of the other face, great auricular nerve for taste

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10
Q

where does CN 5 attach/originate?

A

medial, lateral pons

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11
Q

where does the CN 5 go through?

A

division 1: superior orbital fissure
division 2: foramen rotundum
division 3: foramen ovale

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12
Q

what are the components of CN 7?

A

somatic motor, somatic sensory, visceral motor, visceral sensory

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13
Q

what is the somatic motor innervation of CN 7?

A

facial muscles, digastric posterior belly and stylohyoid muscles

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14
Q

what is the somatic sensory innervation of CN 7?

A

external ear

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15
Q

what is the visceral motor innervation of CN 7?

A

forms synapse in the pterygopalatine ganglia to innervate the lacrimal and mucosal glands
forms synapse in the submandibular ganglia to innervate the submandibular and sublingual glands

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16
Q

what is the visceral sensory innervation of CN 7?

A

anterior 2/3 of the tongue for tatse

17
Q

where does CN 7 attach/originate?

A

lateral pontomedullary junction

18
Q

where does CN 7 go through?

A

internal acoustic meatus until it goes out of the sylomastoid foramen

19
Q

what are the components of CN 9?

A

somatic motor, somatic sensory, visceral motor, and visceral sensory

20
Q

what is the somatic motor innervation on CN 9?

A

stylopharyngeus muscles

21
Q

what is the somatic sensory innervation of CN 9?

A

posterior 1/3 of tongue and external acoustic meatus

22
Q

what is the visceral motor innervation of CN 9?

A

forms synapse in the otic ganglia to innervate the parotid gland

23
Q

what is the visceral sensory innervation of CN 9?

A

posterior 1/3 of tongue for taste
carotid sinus for BP
carotid body for O2 level

24
Q

where does CN 9 attach/originate?

A

posterior to the olive in the medulla oblongata

25
Q

where does CN 9 go through?

A

jugular foramen

26
Q

what are the components of CN 10?

A

somatic motor, somatic sensory, visceral motor, visceral sensory

27
Q

what is the somatic motor innervation of CN 10?

A

levator veli palatini, uvula, pharynx, larynx, paletoglossus, styloglossus

28
Q

what is the somatic sensory innervation of CN 10?

A

epiglottis and external ear

29
Q

what is the visceral motor innervation of CN 10?

A

thoracic and abdominal cavity organs until the end of the midgut

30
Q

what is the visceral sensory innervation of CN 10?

A

epiglottis, central posterior 1/3 of tongue for taste, thoracic and abdominal cavity organs until the end of the midgut

31
Q

where does CN 10 attach/originate?

A

posterior olive

32
Q

what does CN 10 go though?

A

jugular foramen

Anatomy Unit 3 (7 decks)

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