Muscles of Facial Expression

Question 1

Occipitofrontalis frontal belly proximal attachment

Answer 1

Epicranial aponeurosis

Question 2

Occipitofrontalis frontal belly distal attachment

Answer 2

Skin and subcutaneous tissue of eyebrows and forehead

Question 3

Occipitofrontalis frontal belly action

Answer 3

Elevates eyebrows and wrinkles skin of forehead; protracts scalp

Question 4

Occipitofrontalis occipital belly proximal attachment

Answer 4

Lateral 2/3 of superior nuchal line

Question 5

Occipitofrontalis occipital belly distal attachment

Answer 5

Epicranial aponeurosis

Question 6

Occipitfrontalis occipital belly action

Answer 6

retracts scalp; increasing effectiveness of frontal belly

Question 7

Orbicularis oculi proximal attachment

Answer 7

medial orbital margin; medial palpebral ligament; lacrimal bone

Question 8

Orbicularis oculi distal attachment

Answer 8

Skin around margin of orbit; superior and inferior tarsal plates

Question 9

Orbicularis oculi action

Answer 9

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

Question 10

Corrugator supercilli proximal attachment

Answer 10

Medial end of supercilliary arch

Question 11

Corrugator supercilli distal attachment

Answer 11

Skin superior to middle of supraorbital margin and superciliary arch

Question 12

Corrugator supercilli action

Answer 12

Draws eyebrow medially and inferiorly, creating vertical wrinkles above nose

Question 13

Procerus proximal attachment

Answer 13

Fascia aponeurosis covering nasal bone and lateral nasal cartilage

Question 14

Procerus distal attachment

Answer 14

Skin of inferior forehead between eyebrows

Question 15

Procerus action

Answer 15

Depresses medial end of eyebrow; wrinkles skin over dorsum of nose

Question 16

Levator labii superioris proximal attachment

Answer 16

Infraorbital margin (maxilla)

Question 17

Lavator labii superioris distal attachment

Answer 17

Skin of upper lip

Question 18

Levator labii superioris action

Answer 18

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

Question 19

Zygomaticus minor action

Answer 19

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

Question 20

Zygomaticus minor proximal attachment

Answer 20

Anterior aspect, zygomatic bone

Question 21

Zygomaticus minor distal attachment

Answer 21

Skin of upper lip

Question 22

Buccinator action

Answer 22

Presses cheek against molar teeth; resists distension when blowing

Question 23

Buccinator proximal attachment

Answer 23

Mandible, alveolar process of maxilla and mandible, pterygomandibular raphe

Question 24

Buccinator distal attachment

Answer 24

Angle of mouth; orbicularis oris

Question 25

Zygomaticus major action

Answer 25

Part of dilators of the mouth; elevate labial commissure- bilaterally to smile; unilaterally to sneer

Question 26

Zygomaticus major proximal attachment

Answer 26

Lateral aspect of zygomatic bone

Question 27

Zygomaticus major distal attachment

Answer 27

Angle of mouth

Question 28

Levator anguli oris action

Answer 28

Part of dilators of the mouth; elevate labial commissure- bilaterally to smile; unilaterally to sneer

Question 29

Levator anguli oris proximal attachment

Answer 29

Infraorbital maxilla (canine fossa)

Question 30

Levator anguli oris distal attachment

Answer 30

Angle of mouth

Question 31

Risorius action

Answer 31

Part of dilators of mouth; widens rima oris, as when grinning

Question 32

Risorius proximal attachment

Answer 32

Parotid fascia and buccal skin

Question 33

Risorius distal attachment

Answer 33

Angle of the mouth

Question 34

Depressor anguli oris action

Answer 34

Part of dilators of mouth; depresses labial commissure bilaterally to frown

Question 35

Depressor anguli oris proximal attachment

Answer 35

Anterolateral base of mandible

Question 36

Depressor anguli oris distal attachment

Answer 36

Angle of mouth

Question 37

Depressor labii inferioris action

Answer 37

Part of dilators of mouth; retracts and/or everts lower lip

Question 38

Depressor labii inferioris proximal attachment

Answer 38

Platysma and anterolateral body of mandible

Question 39

Depressor labii inferioris distal attachment

Answer 39

Skin of lower lip

Question 40

Mentalis action

Answer 40

Elevates and protrudes lower lip; elevates skin of chin

Question 41

Mentalis proximal attachment

Answer 41

Body of mandible (anterior to roots of inferior incisors)

Question 42

Mentalis distal attachment

Answer 42

Skin of chin

Question 43

Platysma action

Answer 43

Depresses mandible; tenses skin of inferior face and neck

Question 44

Platysma proximal attachment

Answer 44

Subcutaneous tissue of infraclavicular and supraclavicular regions

Question 45

Platysma distal attachment

Answer 45

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