External Cranium Face - Face Muscles Flashcards Preview

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Flashcards in External Cranium Face - Face Muscles Deck (36)
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1

Occipitofrontalis: Front Belly Origin

Epicranial aponeurosis

2

Occipitofrontalis: Front Belly Insertion

Skin and subcutaneous tissue of eyebrows and forehead

3

Occipitofrontalis: Front Belly Action

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

4

Occipitofrontalis: Occipital Belly Origin

Lateral two thirds of superior nuchal line

5

Occipitofrontalis: Occipital Belly Insertion

Epicranial aponeurosis

6

Occipitofrontalis: Occipital Belly Action

Retracts scalp; increasing effectiveness of frontal belly

7

Orbicularis Oculi Origin

Medial orbital margin; medial palpebral ligament; lacrimal bone

8

Orbicularis Oculi Insertion

Skin around margin of orbit; superior and inferior tarsal plates

9

Orbicularis Oculi Action

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

10

Orbicularis Oris Origin

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

11

Orbicularis Oris Insertion

Mucous membrane of lips

12

Orbicularis Oris Action

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

13

Levator Labii Superioris Origin

Infra-orbital margin(maxilla)

14

Levator Labii Superioris Insertion

Skin of upper lip

15

Levator Labii Superioris Action

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

16

Depressor Labii Inferioris Origin

Platysma and anterolateral body of mandible

17

Depressor Labii Inferioris Insertion

Skin of lower lip

18

Depressor Labii Inferioris Action

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

19

Zygomaticus Major Origin

Lateral aspect of zygomatic bone

20

Zygomaticus Major Insertion

Angle of mouth (modiolus)

21

Zygomaticus Major Action

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

22

Risorius Origin

Parotid fascia and buccal skin (highly variable)

23

Risorius Insertion

Angle of mouth (modiolus)

24

Risorius Action

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

25

Depressor Anguli Oris Origin

Anterolateral base of mandible

26

Depressor Anguli Oris Insertion

Angle of mouth (modiolus)

27

Depressor Anguli Oris Action

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

28

Mentalis Origin

Body of mandible (anterior to roots of inferior incisors)

29

Mentalis Insertion

Skin of chin (mentolabial sulcus)

30

Mentalis Action

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