Anatomy 3.7 Flashcards Preview

NMSK-B III > Anatomy 3.7 > Flashcards

Flashcards in Anatomy 3.7 Deck (58):
1

Which CNs emerge from the cerebral hemispheres (telencephalon)?

I

2

Which CNs emerge from the diencephalon?

II

3

Which CNs emerge from the midbrain?

III, IV

4

Which CNs emerge from the pons?

V

5

Which CNs emerge from the ponto-medullary junction?

VI-VIII

6

Which CNs emerge from the medulla?

IX, X, XII

7

Which CNs emerge from the superior spinal cord?

XI

8

Which bones make up the anterior cranial fossa?

frontal
ethmoid
sphenoid

9

Which bones make up the middle cranial fossa?

sphenoid
temporal

10

Which bones make up the posterior cranial fossa?

temporal
occipital

11

CN I

olfactory n
smell

12

CN II

optic n
vision

13

Where is the lesion in a bitemporal sight loss?

optic chiasm

14

CN III

occulomotor n

15

Which CNs pass through the superior orbital fissue?

CN III
CN IV
CN V-1
CN VI

16

Which CNs pass through the optic canal?

CN II

17

Which CNs pass through the interior orbital fissure?

CN V-2

18

Which muscles are innervated by CN III?

-medial rectus
-inferior rectus
-inferior oblique
-superior rectus
-levator palpebrae superioris

19

Which muscles are innervated by CN IV?

superior oblique [passes through trochlea "pulley"]
*down and out* muscle

20

Which muscles are innervated by CN VI?

lateral rectus

21

What is the neumonic for CNs passing through the superior orbital fissure?

LR6 SO4 AO3

22

What is the danger tirangle of the face?

area which can drain back into cavernous sinus and cause brain infection

23

What is an early clinical presentation of a cavernous sinus infection?

abducens nerve palsy (lose lateral gaze)

24

Where does the trigeminal nerve pass through the skull?

superior orbital fissure (V-1)
foramen rotundum (V-2)
foramen ovale (V-3)
"standing room only"

25

CN V-1

opthalmic division of trigeminal

26

CN V-2

maxillary division of trigeminal

27

CN V-3

mandibular division of trigeminal

28

What is the sensory innervation of CN V-1?

-superior face and scalp
-globe (eyeball)
-nasal mucosa

29

What is the sensory innervation of CN V-2?

-skin overlying maxilla
-upper lip
-maxillary teeth and sinuses
-palate

30

What is the sensory innervation of CN V-3?

-skin overlying mandible
-floor of mouth
-mandibular teeth
-anterior tongue

31

What is the motor innervation of CN V-3?

muscles of mastication
-temporalis
-masseter
-medial and lateral pterygoids

32

What is the terminal branch of CN V-1?

supraorbital nerve

33

What is the terminal branch of CN V-2?

infraorbital nerve

34

What is the terminal branch of CN V-3?

mental nerve

35

Where does CN VII pass in the skull?

in: internal acoustic meatus

out: stylomastoid foramen

36

Where does CN VIII pass in the skull?

internal acoustic meatus

37

What are the motor branches of CN VII?

-temporal
-zygomatic
-buccal
-mandibular
-cervical
"To Zanzibar By Motor Car"

38

Which glad does CN VII pass through?

carotid gland; passes through as a plexus

39

What is the special sensory of CN VII?

lingual nerve (blended from CN VII [taste] and V-3 [pain])
-chorda tympani from CN VII

40

CN VIII

vestibulocochlear nerve

41

CN VII

facial nerve

42

What is the location of CN VIII?

petrous portion of temporal bone

43

What is the special sensation of CN VIII?

-balance/equilibrium
-hearing

44

What is the motor innervation of CN IX?

stylopharyngeus

45

What is the sensory innervation of CN IX?

mucosa
-tympanic cavity
-eustacian tube

carotid body and sinus
-chemoreceptors
-baroreceptors

posterior 1/3 of tongue [taste and somatic sensation]

46

motor CN X

pharyngeal constrictors
laryngeal mm.

47

sensory CN X

epiglottis [taste and somatic sensation]

48

parasympathetic supply CN X

thoracic and abdominal viscera [smooth muscle, glands]

49

What is the motor innervation of CN XI?

sternocleidomastoid
trapezius

50

Where does CN XI pass in the skull?

jugular foramen

foramen magnum

51

CN X

vagus nerve

52

CN XI

spinal accesory nerve

53

CN XII

hypoglossal nerve

54

Where does CN XII pass in the skull?

hypoglossal canal

55

Which CNs pass through the jugular foramen?

CN IX, X, XI

56

What is the motor innervation of CN XII?

tongue muscles except palatoglossus

57

What are the 4 ganglions of the CNs?

COPS
ciliary
otic
pterygopalatine
submandibular

58

Where does the internal carotid artery pass in the skull?

-enters throughcarotid canal
-emerges from superior part of foramen lacerum
**does not pass through foramen lacerum