Details (Origin, Action, and insertion) of Facial Muscles

Question 1

Origin

Answer 1

The unmoving end of the muscle that is attached to another structure

Question 2

Insertion

Answer 2

The muscle attachment that is moved when the muscle is activated

Question 3

Action

Answer 3

The function of a particular muscle/what the muscle does

Question 4

Types of Action

Answer 4

Flexion
Extension
Abduction
Adduction

Question 5

Synergist Muscles

Answer 5

Separate muscles that work toward the same goal.
Two or more muscles may help each other

Question 6

Antagonist Muscles

Answer 6

Separate muscles work against each other (antagonize each other)

Question 7

Fascia

Answer 7

Fibrous connective tissue that covers, supports, separates different types of tissue

Question 8

Superficial fascia

Answer 8

Subcutaneous tissue that allows free movement of the skin

Question 9

Deep Fascia

Answer 9

Envelopes and binds muscles

Question 10

Belly

Answer 10

• The widest part of the muscle
• The fleshy part of the muscle
• Some muscles have more than one

Question 11

Occipital-frontalis (Occipitalis)

Answer 11

Origin: superior nuchal line (occipital bone)
Insertion: galea aponeurotica
Action: draws scalp posteriorly (toward the origin/ back of the head)

Question 12

Occipital-frontalis (frontalis)

Answer 12

Definition: belly at the anterior of the cranium
Origin: galea aponeurotica
Insertion: skin of. Eyebrows and root of nose
Action: draws superior and wrinkles forword
Nickname: surprise muscle

Question 13

Temporalis

Answer 13

Definition: located on the temples
Origin: temporal fossa
Insertion: Coronoid process (mandible)
Action: closes the jaw (muscle of mastication)

Question 14

Corrugator

Answer 14

Origin: superciliary arch of frontal bone
Insertion: skin of eyebrow
Action: draws eyebrows inferiorly and wrinkles skin over glabella
Nickname: frowning muscle; means cardboard, wrinkly

Question 15

Procerus

Answer 15

Origin: Nasal bone
Insertion: frontalis muscle and skin of glabella
Action: pulls eyebrows inferiorly

Question 16

Masseter

Answer 16

Origin: zygomatic bone and zygomatic arch of temporal bone
Insertion: angle and Ramos of mandible
Nickname: chewing muscle (masticate=chew)

Question 17

Risorius

Answer 17

Origin: deep fascia of cheek
Insertion: skin at the corner of mouth
Action: draws corner of mouth Laterally
Nickname: false smile

Question 18

Orbicularis oris

Answer 18

Origin: mandible, maxilla, and adjacent muscles to mouth
Insertion: skin and muscles of lips
Action: compresses and proteudes lips and closes mouth
Nickname: puckering muscle

Question 19

Depressor labii inferioris

Answer 19

Origin: mandible
Insertion: skin of lower lip
Action: draws lower lip inferiorly and laterally
(Quadratus labii inferioris- means four sides)

Question 20

Depressor Anguli Oris

Answer 20

Origin: mandible
Insertion: skin and muscles at corner of the mouth
Action: draws corner of mouth inferiorly
(Triangularis)

Question 21

Mentalis

Answer 21

Origin: incisive fossa of mandible
Insertion: skin of chin
Action: elevates and protrudes lower lip, wrinkles skin of chin
(Mental=chin)

Question 22

Digastric (Anterior Belly)

Answer 22

Origin: mandible (exception to “origin” rule because mandible moves)
Insertion: hyoid bone
Action: lowers mandible and opens jaw
(Digastric=2 bellies)

Question 23

Digastric (posterior belly)

Answer 23

Origin: mastoid process
Insertion: hyoid bone
Action: elevates hyoid bone during mastication (chewing) and swallowing

Question 24

Levator palpebrae superioris (deep)

Answer 24

Origin: sphenoid bone inside rear of eye socket
Insertion: skin of superior eyelid
Action: draws eyelids open

Question 25

Orbicularis oculi

Answer 25

Origin: frontal and maxilla bones and ligaments surround the eye sockets Insertion: inferior and superior palpebrae Action: closes eyelids, squinting, blinking, and draws eyebrows inferiorly

Question 26

Lavator labii superior aleque nasi

Answer 26

Definition; lifter or top lip, located on the sides of the face Origin: frontal process of maxilla Insertion: skin of nostril wing and the upper lip Action: raises upper lip and dislates the nostrils

Question 27

Lavator labii superioris

Answer 27

Origin: zygomatic and maxilla bones Insertion: muscle and skin of the upper lip Action: lifts upper lip and exposes maxillary (upper) teeth

Question 28

Zygomaticus Major

Answer 28

Origin: lateral area of zygomatic bone. Insertion: muscle and skin of upper lip Action: draws lip posteriorly, superiorly, and laterally Nickname: laughing muscle (remember “major laughs”)

Question 29

Zygomaticus Minor

Answer 29

Origin: zygomatic bone Insertion: muscle and skin of the upper lip Action: draws upper lip superiorly and laterally Nickname: smiling muscle

Question 30

What muscles draw the lip superiorly?

Answer 30

Z minor, z major, LLS, LLSAN

Question 31

Buccinator

Answer 31

Origin: molar region of maxilla and mandible Insertion: lateral corner of Orbicularis Oris (mouth) Action: compresses neck Nickname: bugler’s muscle/ trumpeter’s muscle

Question 32

Platysma

Answer 32

Origin: skin and fascia near clavicles Insertion: mandible, skin of mouth, and cheeks Action: depresses mandible and lower mouth; tenses skin of lower Face And anterior neck (Plat=flat)

Question 33

Sternocleidomastoid (SCM)

Answer 33

Definition: two heads, one attaching to the clavicle, and one attaching to the sternum Origin: clavicle and sternum Insertion: mastoid process; part of occipitalis Action: pulls the head anteriorly and inferiorly (to dip your head) (Deep to platysma)