anatomy of articulation part 3 exam 3 (cavities of vocal tract/muscles of face/tongue)

bruh im tired

Oral cavity - anterior limit

lips and teeth

Oral cavity - lateral limit

cheeks and teeth

Oral cavity - posterior limit

palatoglossal arch

Oral cavity - superior limit

hard palate

Oral cavity - inferior limit

tongue and floor of mouth

Buccal Cavity

space btw lips/teeth and cheeks/teeth
lateral to oral cavity

Pharyngeal cavity - nasopharynx

space above velum to nasal conchae

Pharyngeal cavity - oropharynx

posterior to fauces, velum to hyoid bone

Pharyngeal cavity - laryngopharnx

epiglottis to esophagus

Nasal septum

- divides nasal cavities
- cartilage and bone

nasal septum - bony portion

vomer and ethmoid bones

Orbicularis oris

- constrict oral opening
- pull lips together (labial seal)

Risorius

retract lips at the corners of mouth (smile)
works with buccinator for retraction

Buccinator

1. moves food to grinding surfaces of molars
2. constricts oropharynx

Levator Labii - Superioris Alaeque Nasi

elevates upper lip

Levator Labii - Superioris

elevates upper lip

Zygomatic Minor

elevates the upper lip

Levator Anguli Oris

draws the corner of the mouth up and medially

Zygomatic major

elevates and retracts angle of mouth

Depressor Anguli Oris

1. depresses corners of mouth
2. helps compress upper lip against lower lip

Depressor Labii Inferioris

pulls lips down and out (sad face)

Mentalis

1. elevates and wrinkles the chin
2. pulls lower lip out

Platysma

1. tenses lower face and neck
2. depresses mandible
3. thin, flat muscle of the neck

Tongue - median sulcus

divides tongue

Tongue - papillae

small prominences hold taste buds

Tongue - lingual tonsils

lymphoid tissue, beneath membranous lining of pharyngeal surface

Tongue - lingual frenulum

band of tissue connecting underside of tongue with floor of mouth

Tongue - sublingual folds

bands of tissue on either side of tongue holding salivary gland ducts

What is the function of intrinsic tongue muscles?

- change shape of tongue
- within tongue no exterior attachement

Lingual Muscle - Superior Longitudinal

1. elevates tongue tip
2. assists in retraction
3. moves tip from side to side

Lingual Muscle - Inferior Longitudinal

1. pulls tip down
2. assists in retraction
3. moves tip side to side

Lingual Muscle - transverse

narrows tongue (/l k g/)

Lingual Muscle - Vertical

pulls tongue down to floor