Craniofacial mm

Question 1

Buccinator [L. bucca, cheek]

Answer 1

attachments- from alveolar processes of the maxilla & mandible, pterygoid hamulus & pterygomandibular raphe to the angle of the mouth

function- compresses cheek

innervation- buccal branch of the facial n.

Question 2

Depressor anguli oris

Answer 2

attachments- from mandible to angle of mouth

function- depresses angle of mouth laterally

innervation- buccal & mandibular branch of the facial n.

Question 3

Frontalis

Answer 3

attachments- from the superficial fascia of the eyebrows to the epicranial aponeurosis

function- protracts the scalp or elevates eyebrows & nose

innervation- temporal branch of the facial n.

Question 4

Levator labii superioris

Answer 4

attachments- from the inferior orbital margin to the lateral aspect of the upper lip

function- raises & everts upper lip

innervation- buccal & zygomatic branches of the facial n.

Question 5

Nasalis

Answer 5

attachments- from the maxilla lateral & inferior to the nasal notch to the bridge & ala of the nose

function- transverse fibers compress & alar fibers widen the nasal aperture

innervation- buccal branch of facial n.

Question 6

Orbicularis oculi

Answer 6

attachments- from orbital margin & medial palpebral lig. to superficial fascia of the eyelid

function- a palpebral sphincter (closes eyes)

innervation- temporal & zygomatic branches of the facial n.

Question 7

Orbicularis oris

Answer 7

attachments- from the angle of the mouth to the superficial fascia of the upper lip

function- an oral sphincter (closes mouth)

innervation- buccal & mandibular branches of the facial n.

Question 8

Platysma (G. platys, flat, broad)

Answer 8

attachments- from the lower border of the mandible to the superficial fascia of the skin of the neck overlying the clavicle

function- wrinkles the anterior nuchal skin

innervation- cervical branch of the facial n.

Question 9

Zygomaticus major [G. zygon, yoke, a joining or pair]

Answer 9

attachments- from zygomatic bone to angle of the mouth

function- raises the angle of mouth

innervation- buccal & zygomatic branches of the facial n.