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Head and Neck 1 > Axial Muscles > Flashcards

Axial Muscles Flashcards

1
Q
A

A. Levator labii superioris alaeque nasi

B. Levator labiisuperioris

C. Zygomaticus minor

D. Zygomaticus major

E. Rosorius

F. Platysma

G. Levator anguli oris

H. Orbicularis oris

I Mentalis

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2
Q
A

Epicranius (Frontal and occipital belly of occipitofrontalis, Galea aponeurotica)

A Corrugator supercilii

B Orbicularis oculi

C Procerus

D Nasalis

E Buccinator

F Depressor labii inferioris

G Depressor anguli oris

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3
Q
A

A. Auricularis anterior

B Temporoparietalis

C Auricularis Superior

D Auricularis posterior

E Occipital belly of occipitofrontalis

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4
Q

Depressor labii inferioris action

A

Depresses lower lip

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5
Q

Levator Labii Superioris Action

A

Elevates upper lip

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6
Q

Levator anguli oris action

A

Elevates corner of mouth

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7
Q

Mentalis action

A

Elevates and protrudes lower lip

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8
Q

Obicularis oris action

A

Compresses, purses lips

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9
Q

Risouris action

A

Draws corner of mouth to side

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10
Q

Depressor anguli oris action

A

Depresses corner of mouth

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11
Q

Zygomaticus action

A

Retracts and elevates corner of mouth

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12
Q

Zygomaticus minor action

A

Retracts and elevates upper lip

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13
Q

Corrugator supercilii action

A

eyebrow movement

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14
Q

Levator palpebrae superioris action

A

Elevates eyelid

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15
Q

Obicularis oculi action

A

Closes eye

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16
Q

Buccinator Origin and insertion

A

O: Alveolar process of maxilla and mandible and pterygomandibular raphe

I: blends into orbicularis oris fibers

CN 7

Pierced by parotid duct

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17
Q

Pterygomandibular raphe

Upper and Lower attachments

What attaches to it

A

Linear cord like connective tissue ligament

  • Upper attachment
    • Pterygoid hamulus
  • Lower attachment
    • Mandible, posterior to 3rd molar
  • Point of attachment for buccinator and superior pharyngeal contrictor muscles
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18
Q

Lateral Pterygoid

Superior O and I

A

Superior

O: Greater sphenoid wing, lateral surface

I: TMJ articular disc and capsule

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19
Q

Lateral Pterygoid

Inferior O and I

A

Inferior

O: Lateral pterygoid lateral surface

I: Ramus and condylar

20
Q

Lateral Pterygoid Action

A

Protrudes

Depresses

Lateral movement (deviates to injured side)

DOES NOT ELEVATE

21
Q

Lateral pterygoid surrounding structures

A
  • Maxillary artery runs either superficial or deep to it
  • Surrounded by pterygoid venous plexus
  • Buccal branch of CNV passes btw the 2 heads
22
Q

Medial Pterygoid

Superficial O and I

A

O: Maxillary tuberosity

I: Medial surface of ramus and angle

23
Q

Medial Pterygoid

Deep O and I

A

O: Lateral pterygoid medial surface

Medial pterygoid lateral surface

Pterygoid fossa

I: Medial surface of ramus and angle

24
Q

Medial pterygoid actions

A

Elevates! Slight protusion and lateral movement

25
Q

Medial Pterygoid Contacts 5 structures

Clical significance

A
  • Contacts
    • Parotid gland
    • Inferior alveolar artery
    • Lingual nerve
    • Inferior alveolar nerve
    • Chorda tympani nerve
  • Deepest muscle of mastication
  • If needle is inserted below the mandibular foramen can be pierced during mandibular block
26
Q

Masseter

Superficial O and I

A

O: Anterior 2/3 of zygomatic arch

I: Angle and ramus lateral surface

27
Q

Masseter

Deep O and I

A

O: Posterior 1/3 of zygomatic arch

I: Coronoid and ramus lateral surface

28
Q

Masseter action

A

Elvate! Some protrude and lateral

29
Q

What 3 structures pass the Masseter

A
  • Passing superficial to masseter
    • Parotid duct
    • Tranverse facial a.
    • Branches of CNVII (7)
30
Q

Temporalis portions

A
  • Anterior
    • Vertical fibers
  • Middle
    • Oblique fibers
  • Posterior
    • Horizontal fibers
31
Q

Temporalis

O and I

A

O: Temporal fossa, inferior temporal line, Temporal fascia

I:Anterior border of ramus

32
Q

Temporalis action

A

Elevates mandible into resting position

Retract and lateral movement

33
Q

What are 4 other muscles innervated by CN V3

A

Mylohyoid

Tensor tympani

Tensor veli palatini

Anterior digastric

34
Q

Sternocleidomastoid

O and I

A
  • O: Manubrium and clavicle
  • I: Mastoid region of the skull
35
Q

Sternocleidomastoid action

Nerves

A

Bilateral, flex neck

Unilateral, rotation

Face turns to contralateral side

Head tilts ipsilateral side

N: CN XI and C2-3

36
Q

Oblique Cervical Muscles

A

Anterior Scalene

Middle Scalene

Posterior Scalene

37
Q

Scalenes

Attach

Action

Innervates

A

Attach: TP of C2-C7 and first 2 ribs

Action: Elevate ribs or flex neck

Innervated: by C4-C6

38
Q

Scalene, structures associated

A

Subclavian artery and brachial plexus pass between the anterior and middle scalene

Subclavian vein and phrenic nerve pass anteriorly to the anterior scalene

39
Q

Suprahyoid Muscles

A

Digastric

Stylohyoid

Mylohyoid

Geniohyoid

40
Q

Digastric

Anterior and posterior

A
  • Anterior belly
    • Origin
      • Mandible
    • Insertion
      • Hyoid
  • Posterior
    • Origin
      • Mastoid Notch
    • Insertion
      • Hyoid
41
Q

Digastric Action

A

Elevate hyoid

Depresses/Retracts mandible during swallowing

42
Q

Digastric Innervation

A

Anterior: CN V3 (Mylohyoid branch)

Posterior: CN VII (Digastric branch)

43
Q

Stylohyoid

O

I

N

A

A

Origin: Styloid process

Inserion: Hyoid

N:CN VII

A: Elvate hyoid during swallowing

44
Q

Mylohyoid

O

I

N

A

A

O: Mylohyoid line of mandible

I: Hyoid via fibrous raphe

N: CN V3 (Mylohyoid branch)

A: Tightens and elevates oral floor

Depresses, retracts, side to side mandible

45
Q

Geniohyoid

O

I

N

A

A

O: Inferior mental spines (genial tubercle)

I: Hyoid

N: C1 via CN XII

A: draws hyoid forward

depresses/retracts mandible

46
Q

What makes up the floor of the oral cavity

A
  • Mylohyoid muscles
    • Muscular diaphragm
  • Geniohyoid muscles
    • cord like muscles
    • Superior to mylohyoid
  • Tongue
    • Superior to geniohyoid

Head and Neck 1 (13 decks)

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