Musculature of Articulation: Lips, Face, Mouth

SLP 5325

Which muscles are involved in lip spreading for /i/?

risorius, buccinator, zygomatic major

Which muscles are involved for lip rounding for /u/?

OOS, OOI

Which muscles are involved in lip constriction for /p, b, m, f, v/?

UL: OOS (but not for /f/ and /v/)

LL: OOI, mentalis

Which muscles are involved in lip release for /p, b/?

UL: zyg minor, LLS

LL: DAO, DLI

Which muscles are involved in tongue tip elevation for /t, d, n, l/?

superior longitudinal

Which muscle is involved in tongue tip release for /t, d/?

inferior longitudinal

Which muscles are involved in grooving tongue for /s,z, sh, zh/?

transverse

What is the border around the mouth?

vermillion border

What is the divot under the nose?

philtrum

Where do the corners of the mouth meet?

oral angle

What are the two ridges below the nostrils?

columella

What are most mouth muscles attached to?

themselves (not bone/cartilage) or skin (e.g., on the chin)

What is called when the fibers of different groups of muscles intermingle?

interdigitation

Which muscle surrounds mouth, under skin of lips, and comprises main muscle mass of lips?

orbicularis oris (superior and inferior)

What sounds does the superior orbicularis oris (SOO) make?

bilabials: /p, b, m/

What sounds ONLY need the inferior orbicularis oris (IOO)?

labiodental: /f, v/

What sounds need the zygomatic minor to OPEN up?

/p, b/

Which muscle runs from the exterior surface of the zygomatic bone to the upper lip?

zygomatic minor

Which muscle runs from the lower margin of eye orbit to lateral half of upper lip? (“pulling an invisible string”)

levator labii superior

Which muscle runs from the zygomatic bone to the skin, mucosa, and muscle at oral angle? (pulls laterally on sides of mouth: “eee” sound. why some folks have dimples: pucker between bifurcation of ZMj before insertion)

zygomatic major

Which muscle runs from the maxilla to oral angle? (no primary speech function)

levator anguli oris

Which muscle is used to bare canines/snarl? (“Keira Knightley smile”)

levator anguli oris

Which muscle runs from the mandible to lower lip at oral angle?

depressor anguli oris

Which muscle runs from the mandible to lower lip?

depressor labii inferior

Which muscle runs from the mandible UP to lower lip? (connects to skin of chin) (lifts chin up)

mentalis

Which muscle runs from angle of mandible to angle of mouth? (“eee”)

risorius

What forms muscle bulk of cheek, and runs from large area of mandible and maxilla to upper and lower lips at oral angle?

buccinator

Which thin, broad, flat muscle covers most of lateral and anterior regions of neck? (from region around pectoralis major to oral angles)

platysma

What is a muscular hydrostat that has compartments with fluid inside?

tongue

Which muscles runs from soft palate superiorly to sides of tongue inferiorly?

palatoglossus

Which muscle can lower soft palate and elevate tongue?

palatoglossus

What is the anatomical boundary between oral cavity and oropharynx?

palatoglossal arch

Which muscle runs superiorly from styloid process to sides of tongue inferiorly?

styloglossus

Which muscle runs from the hyoid bone inferiorly UP to back half of tongue?

hyoglossus

Which muscle runs from inside of mandible (and hyoid) to large area of tongue? (“THE tongue muscle”)

genioglossus

Which muscles position the tongue?

extrinsic muscles

Which muscles shape the tongue?

intrinsic muscles

Which muscle is a very thin sheet on superior surface of tongue? (along entire length of tongue, from hyoid to tip) (/t, d, s, z, r, l/)

superior longitudinal

Deep to superior longitudinal, which muscle runs from side to side across tongue? (grooving for /s, z, sh, zh/)

transverse muscles

From top surface of tongue, which muscle runs down and lateral to sides and inferior surface?

vertical muscles

Which muscle is under surface of tongue, and runs from root (at hyoid) to apex (tip)?

inferior longitudinal

T/F: Muscles of the tongue work alone in articulation.

False

What are the 4 extrinsic muscles?

1. palatoglossus

2. styloglossus

3. hyoglossus

4. genioglossus

What are the 4 intrinsic muscles?

1. superior longitudinal

2. transverse

3. vertical

4. inferior longitudinal

Which muscle raises the tongue tip for /t, d, n, l/?

superior longitudinal

Which muscle grooves the tongue tip for /s, z, sh, zh/?

transverse

Which muscle flattens the tongue?

vertical

Which muscle lowers tongue tip for release on /t, d/?

inferior longitudinal

Which muscle pulls tongue up and back?

styloglossus

Which muscle pulls tongue down and back?

hyoglossus

Which muscle projects tongue forward?

genioglossus

Which muscle moves tongue up/lowers velum for /k, g/?

palatoglossus