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pt gross > External Cranium Face - Face Muscles > Flashcards

External Cranium Face - Face Muscles Flashcards

1
Q

Occipitofrontalis: Front Belly Origin

A

Epicranial aponeurosis

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2
Q

Occipitofrontalis: Front Belly Insertion

A

Skin and subcutaneous tissue of eyebrows and forehead

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3
Q

Occipitofrontalis: Front Belly Action

A

Elevates eyebrows and wrinkles skin of forehead; protracts scalp (indicating surprise or curiosity)

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4
Q

Occipitofrontalis: Occipital Belly Origin

A

Lateral two thirds of superior nuchal line

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5
Q

Occipitofrontalis: Occipital Belly Insertion

A

Epicranial aponeurosis

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6
Q

Occipitofrontalis: Occipital Belly Action

A

Retracts scalp; increasing effectiveness of frontal belly

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7
Q

Orbicularis Oculi Origin

A

Medial orbital margin; medial palpebral ligament; lacrimal bone

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8
Q

Orbicularis Oculi Insertion

A

Skin around margin of orbit; superior and inferior tarsal plates

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9
Q

Orbicularis Oculi Action

A

Closes eyelids: palpebral part does so gently; orbital part tightly (winking)

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10
Q

Orbicularis Oris Origin

A

Medial maxilla and mandible; deep surface of perioral skin; angle of mouth (modiolus)

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11
Q

Orbicularis Oris Insertion

A

Mucous membrane of lips

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12
Q

Orbicularis Oris Action

A

Tonus closes oral tissue; phasic contraction comressess and protrudes lips (kissing) or resists distension (when blowing)

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13
Q

Levator Labii Superioris Origin

A

Infra-orbital margin(maxilla)

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14
Q

Levator Labii Superioris Insertion

A

Skin of upper lip

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15
Q

Levator Labii Superioris Action

A

Part of dilators of mouth; retract (elevate) and /or evert upper lip; deepen nasolabial sulcus (showing sadness)

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16
Q

Depressor Labii Inferioris Origin

A

Platysma and anterolateral body of mandible

17
Q

Depressor Labii Inferioris Insertion

A

Skin of lower lip

18
Q

Depressor Labii Inferioris Action

A

Part of dilators of mouth; (depresses) and/or everts lower lip (pouting, sadness)

19
Q

Zygomaticus Major Origin

A

Lateral aspect of zygomatic bone

20
Q

Zygomaticus Major Insertion

A

Angle of mouth (modiolus)

21
Q

Zygomaticus Major Action

A

Part of dilators of mouth; elevate labial commissure - bilaterally to smile (happiness); unilaterally to sneer (disdain)

22
Q

Risorius Origin

A

Parotid fascia and buccal skin (highly variable)

23
Q

Risorius Insertion

A

Angle of mouth (modiolus)

24
Q

Risorius Action

A

Part of dilators of mouth; depresses labial commissure bilaterally to frown (sadness)

25
Q

Depressor Anguli Oris Origin

A

Anterolateral base of mandible

26
Q

Depressor Anguli Oris Insertion

A

Angle of mouth (modiolus)

27
Q

Depressor Anguli Oris Action

A

Part of dilators of mouth; depresses labial commissure bilaterally to frown (sadness)

28
Q

Mentalis Origin

A

Body of mandible (anterior to roots of inferior incisors)

29
Q

Mentalis Insertion

A

Skin of chin (mentolabial sulcus)

30
Q

Mentalis Action

A

Elevates and protrudes lower lip; elevates skin of chin (showing doubt)

31
Q

Platysma Origin

A

Subcutaneous tissue of infraclavicular and supraclavicular regions

32
Q

Platysma Insertion

A

Base of mandible; skin of cheek and lower lip; angle of mouth (modiolus); orbicularis oris

33
Q

Platysma Action

A

Depresses mandible (against resistance); tenses skin of inferior face and neck (conveying tension and stress)

34
Q

Buccinator (cheek muscle) Origin

A

Mandible, alveolar processes of maxilla and mandible, pterygomandibular raphe

35
Q

Buccinator (cheek muscle) Insertion

A

Angle of mouth (modiolus); orbicularis oris`

36
Q

Buccinator (cheek muscle) Action

A

Presses cheek against molar teeth; works with tongue to keep food between occlusal surfaces and out of oral vestibule; resists distension (when blowing)

pt gross (17 decks)

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