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BDS3 ANATOMY > FACE > Flashcards

FACE Flashcards

1
Q

WHAT ARE THE 5 MAJOR FACIAL MUSCLES AND WHAT ARCH ARE THEY DERIVED FROM

A

buccinator
orbicularis oris
orbicularis oculi
occipitofrontalis
platysma
all derived from 2nd pharyngeal arch

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2
Q

DESCRIBE THE INFRATEMPORAL PORTION OF THE FACIAL NERVE
- how it exits brainstem
- how it enters skull
- roots fuse to form…
- first two branches
- how it exits skull

A
  • leaves pons as two roots - motor and sensory/parasympathetic
  • both roots enter skull via internal acoustic meatus and into facial canal
  • roots fuse to form genticulate ganglion
  • greater petrosal nerve branches (parasympathetic innervation to nasal and lacrimal gland)
  • travels down canal and gives off nerve to stapedius and chorda tympani
  • exits skull via stylomastoid foramen
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3
Q

DESCRIBE THE EXTRATEMPORAL PORTION OF THE FACIAL NERVE

A
  • 2 branches given off - posterior auricular and digastric
  • enters parotid gland and forms parotid giving rise to 5 terminal branches
    temporal , zygomatic , buccal , marginal mandibular and cervical
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4
Q

WHAT DOES THE TEMPORAL BRANCH OF CN VII SUPPLY

A

orbicularis oculi and frontal belly of occipitofrontalis

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5
Q

WHAT DOES THE ZYGOMATIC BRANCH OF CN VII SUPPLY

A

orbicularis oculi

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6
Q

WHAT DOES THE BUCCAL BRANCH OF CN VII SUPPLY

A

buccinator and orbicularis oris

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7
Q

WHAT DOES THE MARGINAL MANDIBULAR BRANCH OF CN VII SUPPLY

A

orbicularis oris

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8
Q

WHAT DOES THE CERVICAL BRANCH OF CN VII SUPPLY

A

platysma

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9
Q

WHAT NERVE INNERVATES THE OCCIPITAL BELLY OF OCCIPITOFRONTALIS

A

posterior auricular - branch of facial nerve before it enters parotid

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10
Q

WHAT CONNECTS THE FRONTAL AND OCCIPITAL BELLIES OF OCCIPITOFRONTALIS

A

shared tendon known as epicranial aponeurosis (3rd layer of scalp)

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11
Q

FUNCTION OF OCCIPITOFRONTALIS

A

retract scalp and wrinkle forehead

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12
Q

WHAT ARE THE 2 PARTS OF ORBICULARIS OCULI

A

palpebral - eyelids
orbital - surrounding

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13
Q

FUNCTION OF ORBICULARIS OCULI

A

palpebral part - closes lids gently
orbital part - closes lids tightly

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14
Q

ORIGIN AND INSERTION OF PALPEBRAL PART OF ORBICULARIS OCULI

A

origin - medial palpebral ligament
insertion - lateral palpebral raphe

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15
Q

ORIGIN AND INSERTION OF ORBITAL PART OF ORBICULARIS OCULI

A

origin - nasal part of frontal bone , frontal process of maxilla and medial palpebral ligament
insertion - skin around margin of orbit

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16
Q

FUNCTION OF ORBICULARIS ORIS

A

sphincter muscle acting to open close and protrude lips

17
Q

ORIGIN AND INSERTION OF ORBICULARIS ORIS

A

origin - buccinator, medial mandible and maxilla
insertion - mucous membrane of lips

18
Q

ORIGIN AND INSERTION OF BUCCINATOR

A

origin - alveolar processes of mandible and maxilla and pterygomandibular raphe
insertion - orbicularis oris

19
Q

WHERE IS THE BUCCINATOR FOUND

A

in the cheek , lies deep to masseter and parotid gland

20
Q

WHERE IS PAROTID DUCT FOUND

A

leaves parotid and runs superficial to masseter before piercing buccinator and entering oral cavity

21
Q

FUNCTION OF PLATYSMA

A

tesnes skin of neck and inferior face
depresses mandible

22
Q

ORIGIN AND INSERTION OF PLATYSMA

A

origin - subcutaneous tissues of infra and subclavicular tissues
insertion - base of mandible

23
Q

DILATORS

A

group of muscles that radiate from lips and angles of mouth
act to widen mouth or lift or depress corners

24
Q

MODIOLUS

A

cause of dimples
mixing of various muscle fibres lateral to mouth angles

25
Q

ARTERIAL SUPPLY TO FACIAL MUSCLES

A

main source is facial artery but also maxillary and superficial temporal

26
Q

TARSUS

A

layer of eyelid providing support

27
Q

NAME 3 STRUCTURES EMBEDDED WITHIN THE PAROTID GLAND

A

parotid plexus of facial nerve
retromandibular vein
ECA

28
Q

WHAT NERVE SUPPLIES PARASYMPATHETIC INNERVATION TO THE PAROTID GLAND

A

glossopharyngeal

29
Q

POSSIBLE SURGICAL TREATMENT FOR BELLS PALSY THAT DOES NOT FADE

A

gold weight in eyelid to aid closure

BDS3 ANATOMY (15 decks)

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