Fascial Muscles Flashcards
how deep are facial muscles
they lie within the subcutaneous layer
facial muscles typically originate in
fascia or skull bones
facial muscles typically insert in
skin
facial muscles do move skin rather than_____ when contracting
joints
orbicularis oris
a muscle around the mouth that closes the lips and shapes the lips in speech
zygomaticus major
smiling muscle
a muscle that is anchored to the zygomatic bone and goes across the side of the face, it draws the angle of mouth superiorly and laterally
frontalis
located at the hairline and above the eyebrows this muscle wrinkled the forehead, moves the scalp and raises the eyebrows
platysma
“pouting muscle”
located along the neck, around the mandible and skin of lower face, and originates from the pec major. It pulls the lateral part of Lower lip inferiorly and posteriorly + depresses mandible
orbicularis oculi (binoculars)
located around the orbit of the eye, it’s job is to close and open eyes.
Buccinators
trumpeter
located below the cheeks, its job is yo compress the cheeks when whistling, sucking, etc.
temporalis
originates from the temporal bone, and inserts into the jaw, its job is elevation and retraction of the mandible
masseter
chewer
originates on the maxilla and zygomatic arch, and insert into the mandible, its job is to elevate and lower the jaw.
Sternocleidomastoid
originates in the upper chest and inserts into the temporal bones, it flexes the head side to side
