Muscles of the Face

Question 1

What is the forehead region called?

Answer 1

Epicranius Occipitofrontalis

Question 2

Characteristics of the muscles of facial expression

Answer 2

• All paired muscles in the superficial fascia of the face
• Origin/insertion bones to superficial fascia
• Action: Various combinations vary appearance of face

Question 3

Embryonic development of muscles of facial expression

Answer 3

Second brachial/ Pharyngeal Arch/ Hyoid Arch

Question 4

Innervation of muscles of facial expression

Answer 4

Facial Nerve- VII cranial nerve

Question 5

Action of Epicranius Occipitofrontalis

Answer 5

Surprise expression, raising eyebrows and scalp

Question 6

Origin of epicranius occipitofrontalis

Answer 6

Frontal belly: epicranial aponeurosis (scalp tendon)

Question 7

Insertion of Epicranius occipitofrontalis

Answer 7

Skin tissue of eyebrows and root of nose

Question 8

Action of Orbicularis Occuli (eye region)

Answer 8

Palpebral- gently closes eyelid

Orbital- forcefully closes eyelid

Question 9

Origin of orbicularis occuli

Answer 9

Orbital rim, nasal process of frontal bone & frontal process of maxillary bone

Question 10

Insertion of orbicularis occuli

Answer 10

Skin tissue: lateral region of eye and some fibers encircle the eye

Question 11

Action of Corrugator subercilii

Answer 11

Between eyebrows
Eyebrows pulled together and down
Frowning

Question 12

Origin of corrugator supercilii

Answer 12

Frontal bone, supraorbital region

Question 13

Insertion of corrugator supercilii

Answer 13

Superolateral into skin of eyebrow

Question 14

Action of Orbicularis Oris (around mouth)

Answer 14

Closes the lips, pursing lips, pucker, kiss

Question 15

Origin of orbicularis oris

Answer 15

encircle the mouth

Question 16

Insertion of Orbicularis Oris

Answer 16

Angle of the mouth, upper lip into ridge of philtrum

Question 17

Action of buccinator

Answer 17

Compresses cheek, pushes food on teeth during chewing

Question 18

Origin of buccinator

Answer 18

Alveolar process of the maxilla, mandible and pterygomandibular fold (raphe)

Question 19

Action of risorius

Answer 19

Retracts angle of mouth, grimace or wide smile

Question 20

Origin of risorius

Answer 20

Fascia superficial to masseter muscle

Question 21

Insertion of risorius

Answer 21

Skin tissue at angle of mouth

Question 22

Action of levator labii superioris alaeque nasi

Answer 22

Elevates upper lip and dilates nostrils

Question 23

Origin of levator labii superioris alaeque nasi

Answer 23

Frontal process of maxilla

Question 24

Insertion of levator labii superioris alaeque nasi

Answer 24

Skin tissue of nasal alae and upper lip

Question 25

Action of levator labii superioris

Answer 25

Elevates upper lip

Question 26

Origin of levator labii superioris

Answer 26

Infraorbital rim of maxilla

Question 27

Insertion of levator labii superioris

Answer 27

Skin tissue of upper lip

Question 28

Acton of zygomaticus minor

Answer 28

Raising upper lip

Question 29

Origin of zygomaticus minor

Answer 29

zygomatic bone

Question 30

Insertion of zygomaticus minor

Answer 30

skin tissue of upper lip

Question 31

Action of levator anguli oris

Answer 31

Elevates angle of mouth | Smiling

Question 32

Origin of levator anguli oris

Answer 32

canine fossa of maxilla

Question 33

Insertion of levator anguli oris

Answer 33

Skin at angle of the mouth

Question 34

Action fo zygomaticus major

Answer 34

Elevates angle of upper lip | smiling

Question 35

Origin of zygomaticus major

Answer 35

Zygomatic bone

Question 36

Insertion of zygomaticus major

Answer 36

skin tissue at angle of the mouth

Question 37

Action of depressor labii inferioris

Answer 37

Draws lower lip down, exposes lower incisors

Question 38

Origin of depressor labii inferioris

Answer 38

Lower border of mandible

Question 39

Insertion of depressor labii inferioris

Answer 39

Skin tissue of lower lip

Question 40

Action of depressor anguli oris

Answer 40

Depresses angle of mouth | Frowning

Question 41

Origin of depressor anguli oris

Answer 41

Lower border of mandible

Question 42

Insertion of depressor anguli oris

Answer 42

skin tissue at angle of mouth

Question 43

Action of the mentalis

Answer 43

Raises skin of chin, protrudes lower lip

Question 44

Origin of mentalis

Answer 44

Mandible near midline

Question 45

Insertion of mentalis

Answer 45

skin tissue of chin

Question 46

Action of platysma

Answer 46

Raises skin of the neck, pulls corners of mouth down, grimace

Question 47

Origin of platysma

Answer 47

skin tissue superficial to clavicle and shoulder

Question 48

Insertion of platysma

Answer 48

lower border of mandible and muscles surrounding the mouth