Muscles of the Head

Question 1

Number of Facial Muscles

Answer 1

16

Question 2

Number of mastication/tongue muscles

Answer 2

4 and 3

Question 3

Facial muscle innervation

Answer 3

CN-VII, the facial nerve

Question 4

Innervation of mastication muscles

Answer 4

Trigeminal nerve (CN-V)

Question 5

Innervation of tongue muscles

Answer 5

Hypoglossal nerve (CN-XII)

Question 6

occipitofrontalis (aka epicranius)

Answer 6

• Frontal belly: Elevates eyebrows, wrinkles skin of forehead
  Occipital belly: Retracts scalp
• connected by epicranial aponeurosis
• facial muscle

Question 7

corrugator supercilli

Answer 7

wrinkles eyebrow
- facial muscle

Question 8

procerus

Answer 8

facial muscle (synergist)
- Assist in flaring top part of nostrils when upset/wrinkling eyebrow

Question 9

orbicularis oculi

Answer 9

facial muscle
- creates Smile lines near eyes
- Assist in closure of eyelid & contraction of tear duct

Question 10

zygomaticus major

Answer 10

facial muscle
- Smiling; draws lip upward and back
- muscular defect creates dimples

Question 11

zygomaticus minor

Answer 11

facial muscle
- assists in smiling

Question 12

orbicularis oris

Answer 12

facial muscle
- pursing lips (kissing), closing lips

Question 13

levator angulli oris

Answer 13

facial muscle
- Draw mouth up and out (smiling)

Question 14

depressor anguli oris

Answer 14

facial muscle
- Move mouth out and down (frowning)

Question 15

risorius

Answer 15

facial muscle
- pull corners of mouth laterally
- major muscle in smiling

Question 16

levator labiii superioris

Answer 16

facial muscle
- Raise/elevate upper lip

Question 17

depressor labii inferioris

Answer 17

facial muscle
- Evert (stick out) bottom lip

Question 18

nasalis

Answer 18

facial muscle
- chiefly responsible for flaring of nostrils

Question 19

mentalis

Answer 19

facial muscle
- responsible for dimpling of chin
- defect results in cleft chin

Question 20

buccinator

Answer 20

facial muscle
- Contract to whistle/blow
- Pulls cheeks inwardly
- prevents accumulation of food in one area

Question 21

platysma

Answer 21

facial muscle
- Superficial neck muscle, broad
- Protects blood vessels (carotid artery)
- draws the skin around the lower part of your mouth down or out

Question 22

primary movers of jaw closure

Answer 22

Temporalis and masseter
- Up and down movement of jaw

Question 23

Grinding movements

Answer 23

Medial and lateral pterygoids
- Side to side movement of jaw

Question 24

Tongue muscles

Answer 24

Genioglossus
Hypoglossus
Styloglossus

Question 25

- Frontal belly: Elevates eyebrows, wrinkles skin of forehead Occipital belly: Retracts scalp - connected by epicranial aponeurosis - facial muscle

Answer 25

occipitofrontalis (aka epicranius)

Question 26

Facial muscle - pulls eyebrows medially and inferiorly

Answer 26

corrugator supercilli

Question 27

facial muscle (synergist) - Assist in flaring top part of nostrils -depress medial end of eyebrows

Answer 27

procerus

Question 28

facial muscle - creates Smile lines near eyes - Assist in closure of eyelid & contraction of tear duct

Answer 28

orbicularis oculi

Question 29

facial muscle - Smiling; draws lip upward and back - muscular defect creates dimples

Answer 29

zygomaticus major

Question 30

facial muscle - assists in smiling

Answer 30

zygomaticus minor

Question 31

facial muscle - pursing lips (kissing), closing lips

Answer 31

orbicularis oris

Question 32

facial muscle - Draw mouth up and out (smiling) 

Answer 32

levator angulli oris

Question 33

facial muscle - Move mouth out and down (frowning)

Answer 33

depressor anguli oris

Question 34

facial muscle - pull corners of mouth laterally - major muscle in smiling

Answer 34

risorius

Question 35

facial muscle - Raise/elevate upper lip

Answer 35

levator labiii superioris

Question 36

facial muscle - Evert (stick out) bottom lip

Answer 36

depressor labii inferioris

Question 37

facial muscle - chiefly responsible for flaring of nostrils

Answer 37

nasalis

Question 38

facial muscle - responsible for dimpling of chin - defect results in cleft chin

Answer 38

mentalis

Question 39

facial muscle - Contract to whistle/blow - Pulls cheeks inwardly - prevents accumulation of food in one area

Answer 39

buccinator

Question 40

facial muscle - Superficial neck muscle, broad - Protects blood vessels (carotid artery) - draws the skin around the lower part of your mouth down or out

Answer 40

platysma

Question 41

Temporalis and masseter - Up and down movement of jaw

Answer 41

primary movers of jaw closure

Question 42

Medial and lateral pterygoids - Side to side movement of jaw

Answer 42

Grinding movements

Question 43

Genioglossus Hypoglossus Styloglossus

Answer 43

Tongue muscles