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HAE W14 Quiz 2 > Face > Flashcards

Face Flashcards

1
Q

Pretremantric branch to frontonasal prominence

A

CN V1 -opthalmic division of trigeminal nerve

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2
Q

what primordia are the muscles of facial expression derived from?

A

myoblasts assoc. w/ 2nd pharyngeal arch

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3
Q

why are muscles of facial expression innervated by CNVII, nerve of 2nd arch?

A

myoblasts migrate into the face (1st arch territory), drag innervation w/ them

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4
Q

2 foramina in zygomatic bone

A
  1. zygomaticofacial foramen

2. zygomaticotemporal foramen - located on deep surface of zygomatic bone

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5
Q

innervation of muscles of facial expression

A

CN VII - facial

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6
Q

orbicularis oculi

A

circular muscle surrounding eye; closes eyelid

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7
Q

zygomaticus major

A

attaches to corner of mouth; produces smile

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8
Q

orbicularis oris

A

circular muscle surrounding mouth; closes mouth

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9
Q

buccinator

A

muscle of cheek; used when blowing and chewing

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10
Q

frontalis

A

muscle of forehead

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11
Q

additional muscles of 2nd arch

A

platysma, posterior digastric, stylohyoid

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12
Q

sensory innervation of face

A

CN V - trigeminal nerve

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13
Q

where are afferent fibers cell bodies for CN V?

A

sensory ganglion (trigeminal or semilumnar ganglion)

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14
Q

Which foramina in cranial fossa do the branches of CN V pass through

A

V1- superior orbital fissure
V2 - foramen rotundum
V3 - foramen ovale

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15
Q

branches of CNV1 that innervate skin of the face (inferior –> superior)

A
  1. external nasal n. –> skin on bridge of nose
  2. infratrochlear n. –> skin on medial corner of eye + bridge of nose
  3. lacrimal n. –> skin on lateral corner of eye
  4. supratrochlear n.–> skin of forehead
  5. supraorbital n. –> skin of forehead
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16
Q

branches of CNV2 that innervate the face (inferior –> superior)

A
  1. infraorbital n.
  2. zygomaticofacial n.
  3. zygomaticotemporal n.
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17
Q

branches of CNV3 that innervate the face (inferomedial –> superolateral)

A

innervation of “beard-like” portion of skin

  1. mental
  2. buccal
  3. auricular temporal
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18
Q

major source of blood supply to face

A

facial artery (branch of ECA)

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19
Q

branches of the facial artery (inferior –> superior)

A
  1. inferior labial a.
  2. superior labial a.
  3. septal branch (source of nose bleeds)
  4. angular a. (terminates near medial corner of eye)
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20
Q

arteries that supply the face other than facial + facial branches

A
  • transverse facial (branch of superficial temporal)
  • supraorbital and supratrochlear a. (branches of opthalmic a.)
  • infraorbital + mental a. (branches of maxillary a.)
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21
Q

branches of internal carotid artery that supply the face

A

internal carotid a. –> opthalmic a. –> supraorbital + supratrochlear

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22
Q

branches of maxillary a. that supply the face

A

infraorbital a. and mental a.

23
Q

venous drainage of the face ultimately drains into ____

A

IJV - branches prior have same names as arteries

24
Q

supraorbital v. and supratrochlear v. drain into ____

A

opthalmic vein

25
Q

facial veins merge with ____ b/f draining into IJV

A

retromandibular vein

26
Q

where does the parotid gland empty?

A

into oral cavity opposite to 2nd upper molar tooth

27
Q

what is the parotid sheath that surrounds the parotid gland made of?

A

investing fascia

28
Q

location of parotid gland

A

Superficial part: anterior and inferior to ear

Deep part: b/t mastoid process and ramus of mandible

29
Q

course of parotid duct

A

traverses face on surface of masseter muscle –> pierces buccinator –> empties into oral cavity opposite to 2nd upper molar

30
Q

what three important structures pass through the parotid gland?

A
  1. facial nerve
  2. external carotid artery
  3. retromandibular vein
31
Q

how/where does CN VII exit the skull?

A

travels along internal acoustic meatus –> exits through stylomastoid foramen

32
Q

Motor branches of facial nerve go to what muscles?

A
  • occipitalis
  • posterior digastric
  • stylohyoid
33
Q

5 terminal branches of the facial nerve (superior –> inferior)

A

TO ZANZIBAR BY MOTORCAR

  1. temporal
  2. zygomatic
  3. buccal
  4. marginal mandibular
  5. cervical
34
Q

retromandibular vein is formed by the junction of ____ and _____

A

superficial and maxillary veins

35
Q

what area does the retromandibular vein drain?

A

scalp and deep face

36
Q

sensory innervation of parotid gland

A

auriculotemporal nerve (branch of CN V3)

37
Q

secretomotor innervation of parotid gland - parasymp, symp, or both?

A

both!

38
Q

parasymp innervation for parotid gland

A

CN IX - glossopharyngeal –> otic ganglion –> postganglionic parasymps in auriculotemporal nerve

39
Q

symp innervation for parotid gland

A

postganglionic (cell bodies where in superior cervical ganglion) –> external carotid n. and plexus

40
Q

5 layers of scalp

A 
S- skin
C- connective tissue
A- aponeurosis
L - loose CT
P - periosteum
41
Q

in which layer of the scalp are the vessels and nerves found?

A

connective tissue

42
Q

in which layer of the scalp is the occipitalfrontalis muscle?

A

aponeurosis

43
Q

which layer allows the scalp to move freely over the calvaria?

A

loose CT

44
Q

occipitofrontalis muscle

A

two bellies: frontal is and occipitals

action: moves scalp, frontalis wrinkles forehead

45
Q

innervation of occipitofrontalis

A

CN VII (it is a muscle of facial expression)

46
Q

blood supply of anterior scalp

A

supraorbital and supratrochlear a. (ICA –> opthalmic a. –> supraorbital + supratrochlear)

47
Q

blood supply to lateral scalp

A 
superficial temporal (terminal branch of ECA)
posterior auricular a. (small branch of ECA)
48
Q

blood supply to posterior scalp

A

occipital artery (branch of ECA)

49
Q

veins from scalp

A

travel w/ and have same name as arteries

50
Q

why do scalp lesions bleed so much?

A

blood vessels are in dense CT –> can’t constrict when cut

51
Q

why don’t lesions superficial to layer 3 gape open?

A

aponeurosis beneath holds them together

52
Q

sensory innervation to anterior scalp

A

CNV1 branches - supraorbital and supratrochlear

53
Q

sensory innervation to lateral scalp

A

spinal nerves -

  • zygomaticotemporal (CN V2 branch) –> small area lateral to eye
  • auriculotemporal (CN V3 branch) –> majority of skin of lateral scalp
  • lesser occipital n.
54
Q

sensory innervation to posterior scalp

A

branches of cervical spinal nerve C2 + C3

HAE W14 Quiz 2 (5 decks)

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