muscles of facial expression and mastication Flashcards
orbicularis oculi
frontalis
zygomaticus major
zygomaticus minor
orbicularis oris
risorius
levator labii superioris
masseter
buccinator
buccinator
platysma
temporalis
occipitalis
epicranius
frontal belly
frontal belly
elevates eyebrows in glancing upwards and expressions of surprise; draws scalp forward and wrinkles skin of forehead
galea aponeurotica
subcutaneous tissue of eyebrows
occipital belly
retracts scalp; fixes galea aponeurotica so frontal belly can act on eyebrows
temporal bone
galea aponeurotica
orbicularis oculi
sphincter of eyelids; closed eyes in blinking, squinting
lacrimal bone; frontal bone; maxilla
upper and lower eyelids
orbicularis oris
encircles mouth, closes lips, protrudes lips as in kissing; speech
modiolus of mouth
submucosa and dermis of lips
levator labii superioris
elevates and everts upper lip in sad, sneering, serious expressions
zygomatic bone and maxilla
muscles of upper lip
zygomaticus minor
elevates upper lip; exposed upper teeth in smiling
zygomatic bone
muscles of upper lip
zygomaticus major
draws angle of mouth upward and laterally in laughing
zygomatic bone
superolateral angle of mouth
risorius
draws angle of mouth laterally in expression of laughing, horror, disdain
zygomatic arch
modiolus
buccinator
compresses cheek against teeth and gum; directs food between molars
mandible and maxilla
orbicularis oris; submucosa of cheek and lips
platysma
draws lower lips and angle of mouth downward in expressions of horror or surprise; opening mouth widely
fascia of deltoid and pectoralis major
mandible
temporalis
elevation of mandible
cranium
coronoid process
masseter
elevation of mandible
zygomatic arch
mandible
