Muscles of Articulation + resonation Flashcards
zygomaticus minor
elevate upper lip
zygomaticus major
elevates and retracts the angle of mouth
levator labii superioris
elevate upper lip
risorius
retract lip at corner
upper orbicularis oris
constrict oral opening
platysma
depress mandible
depressor labii inferioris
pulls lips down and out
mentalis
elevates and wrinkles the chin
pulls lower lip out
lower orbicularis oris
constrict oral opening
buccinator
moves food onto grinding surfaces of the molars
Parts of the tongue
central sulcus
terminal sulcus
foramen cecum
lingual frenulum
sublingual folds
central sulcus
divides tongue into left and right sides
terminal sulcus
border between oral and pharyngeal portions
foramen cecum
small depression on the back of the tongue between oral and pharyngeal surfaces
lingual frenulum
joins inferior tongue and mandible
stabilizes tongue during movement
sublingual folds
two elevated bands of tissue on floor of mouth
Intrinsic muscles
produce rapid delicate articulations for speech and non speech
muscles of tongue: Intrinsic
superior longitudinal
inferior longitudinal
transverse muscle
vertical muscle
superior longitudinal
elevates, retracts or deviates tip of tongue
inferior longitudinal
pull tip down
retract and deviate tongue
transverse
narrow tongue
vertical
pull tongue down
extrinsic muscles
moving the tongue
general posture for articulation
muscles of tongue: extrinsic
genioglossus
hyoglossus
styloglossus
palatoglossus
genioglossus (XII)
anterior: retract
posterior: protrude
both: depress
hyoglossus (XII)
pulls sides of tongue down
styloglossus (XII)
draws tongue back and up
palatoglossus (XI + X)
elevate tongue or depress soft palate
muscles of mastication: mandibular elevators
masseter
temporalis
medial pterygoid
lateral pterygoid
masseter (V)
most superficial
elevate mandible
temporalis (V)
deep to masseter
elevate mandible and draws back if protruded
medial pterygoid (V)
elevate mandible
lateral pterygoid (V)
protrude mandible
muscles of mastication: mandibular depressors
digastric anterior
mylohyoid
digastric posterior
geniohyoid
digastric anterior (V)
pulls hyoid forward
depress mandible if in conjunction w/ digastricus posterior
mylohyoid (V)
depress mandible
Digastric posterior (VII)
pull hyoid back
depress mandible if in conjunction w/ anterior digastricus
geniohyoid (XII)
depress mandible
muscles of velum (soft palate): soft palate elevators
levator veli palatini
musculus uvulae
muscles of velum: auditory tube dilator
tensor veli palatini
muscles of velum: soft palate depressors
palatoglossus
palatopharyngeus
levator veli palatini (XI + X)
elevate and retract posterior velum
musculus uvulae (XII + X)
shorten soft palate
tensor veli palatini (V)
dilate auditory tube
palatopharyngeus (XI + X)
narrow pharynx
lower soft palate
muscles of pharynx: Pharyngeal constrictor
superior pharyngeal constrictor
middle pharyngeal constrictor
inferior pharyngeal constrictor
cricopharyngeus
muscles of pharynx: elevators
salpingopharyngeus
stylopharyngeus
superior pharyngeal constrictor (IX + X)
pull pharyngeal wall forward
constrict diameter
middle pharyngeal constrictor (IX + X)
narrow pharynx diameter
inferior pharyngeal constrictor (IX + X)
reduce diameter of lower pharynx
cricopharyngeus (IX + X)
constrict superior orifice of esophagus
salpingopharyngeus (X + XI)
elevate lateral wall
stylopharyngeus (IX)
elevate and open pharynx