Muscle Names

Question 1

Buccinator

Answer 1

Origin: alveolar processes of maxilla and mandible
Insertion: blends into fibers of orbicularis oris
Action: compresses cheeks

Question 2

Depressor labii inferioris

Answer 2

Origin: mandible between the anterior midline and the mental foramen
Insertion: skin of lower lip
Action: depresses lower lip

Question 3

Levator labii superioris

Answer 3

Origin: inferior margin of orbit, superior to the infraorbital foramen
Insertion: orbicularis oris
Action: elevates upper lip

Question 4

Levator anguli oris

Answer 4

Origin: maxilla below the infraorbital foramen
Insertion: corner of mouth
Action: elevates mouth corner

Question 5

Mentalis

Answer 5

Origin: incisive fossa of mandible
Insertion: skin of chin
Action: elevates and protrudes lower lip

Question 6

Orbicularis oris

Answer 6

Origin: maxilla and mandible
Insertion: lips
Action: compresses, purses lip

Question 7

Risorius

Answer 7

Origin: fascia surrounding parotid salivary gland
Insertion: angle of mouth
Action: draws corner of mouth to the side

Question 8

Depressor anguli oris

Answer 8

Origin: anterolateral surface of mandibular body
Insertion: skin at angle of mouth
Action: depresses corner of mouth

Question 9

Zygomaticus major

Answer 9

Origin: zygomatic bone near zygomaticomaxillary suture
Insertion: angle of mouth
Action: retracts and elevates corner of mouth

Question 10

Zygomaticus minor

Answer 10

Origin: zygomatic bone posterior to zygomaticotemporal suture
Insertion: upper lip
Action: retracts and elevates upper lip