Restorative 2 Flashcards
the point of muscle attachment which moves the least
origin
the point of muscle attachment which moves the most
insertion
(epicranius) muscle that draw posteriorly, draw inferiorly
occipitofrontalis muscle
frontalis
frontal belly
occipitalis
occipital belly
when contracted, this muscle raises the eyebrows and continual contraction form transverse frontal sulci
effect on surface form: occipitofrontalis muscle
wrinkles that run a cross forehead
transverse frontal sulci
prude fan shape muscle closes the mandible, used for chewing
temporalis muscle
mastication; it closes the mandible and some side to side movement
function of the temporalis muscle
what is the strongest jaw muscle of mastication
temporalis
not strongest of jaw muscle
mandible
orbicularis oculi, corrugator, levator palpebral superiors
muscle of the facial expression
surrounds the eye leads
orbicularis oculi
gravitation goes from moving in inferior to posterior view
funeral homes
close the eyelid when contracted
function of the orbicularis oculi
produce tears, also compresses the lacrimal sac
orbicularis oculi
optic facial sulci (crows feet)
orbicularis oculi effect on the surface
crows feet
acquired
frowning muscle and pyramid shape muscle
corrugator
draws the eyebrows downward &medially when contracted
function of the corrugator
vertical interciliary sulci ( located below eyebrows)
corrugator effect on surface form
elevate the upper eyelid (raise)
levator
procerus muscle
muscle of the nose
transverse interciliary sulci
procerus muscle effect on surface form
facial sulcus
bucco
bucco (facial sulcus)
acquired
The very large muscle that covers the top and sides of the skull.
Occipitofrontalis
Three muscles in the region of the ear
Auricular
chewing
Muscle of mastication
Fan shaped muscle which retrieves the lower law and bring the teeth together. It has no effect on surface form.
Temporalis
This muscle raises the lower jaw; the only muscle of mastication which influences surface form. Injection of strong fluid into this muscle is an accepted method of mouth closure.
Masseter
Located at the medial end of the eyebrow, known as the (frowning muscle).
Corrugator
muscle of facial expression that runs from the inside of the eye socket to the superior tarsal plate of the eyelid
Levator Palpebrae superioris
muscle of facial expression, raises the upper lip and dilates the nostrils.
Lavator labii superioris alaeque nasi
muscle of facial expression – elevates and extends the upper lip.
Levator labii superioris
muscle of facial expression that arises from the mandible to insert into the anguli oris.
Depressor anguli oris (Triangularis)