SLSS2203: muscles of swallowing and articulation/resonance

orbiculus oris inferior, zygomaticus minor, levator labii superioris

elevates upper lip

orbiculus oris superior

pulls lower lip down

risorius

retracts lips

depressor labii inferioris

pulls lips down and out

zygomaticus major

elevates and retracts lips (smile muscle)

depressor anguli oris

compresses lips together (important for anterior seal)

levator anguli oris

draws corner of mouth up and medially (soft smile muscle)

mentalis

projects lower lip outwards

levator labii superioris alaeque nasi

raises angle of mouth

superior longitudinal

elevates, retracts, and deviates tongue tip; intrinsic muscle

inferior longintudinal

depresses tongue tip; retracts and deviates tongue; intrinsic muscle

transverse

narrows tongue; intrinsic muscle

vertical

flattens tongue; intrinsic muscle

genioglossus

retract, protrude, and depress tongue; extrinsic muscle

hyoglossus

pulls tongue sides down; extrinsic muscle

styloglossus

moves tongue back and up; extrinsic muscle

chondroglossus

depresses tongue; extrinsic muscle

palatoglossus

elevates tongue and depresses velum; raises back of tongue during oral phase; extrinsic muscle

levator veli palatini

elevates and retracts posterior velum

uvulae

shortens soft palate; shortens and raises uvulae

palatopharyngeus

narrows pharynx; lowers soft palate; shuts of nasopharynx during pharyngeal phase

tensor veli palatini

stretches soft palate

temporalis, masseter,medial pterygoid

elevates/closes mandible

lateral pterygoid

controls the lateral movement of mandible