Rest Art 2 Flashcards
Living
inferior
Dead
posterior
point of muscle attachment which moves the least
ORIGIN
point of muscle attachment which moves the most
INSERTION
Muscle of the cranium, only one non-paired. Sheath muscle (long)
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
covers the top of the skull
LOCATION OF OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
draws scalp posteriorly or anteriorly and raises eyebrows
FUNCTION OF OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
frontal belly
frontalis
occipital belly
occipitalis
- When contracted raises eyebrows
2. Continued contractions forms transverse frontal sulci (WORRY LINES/ WRINKLES)
EFFECT OF OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
MUSCLES OF THE CRANIUM
Broad fan shaped muscle
TEMPORALIS
located along temporal bone
LOCATION OF TEMPORALIS
mastication (chewing); closing the mandible and some side to side movement
FUNCTION OF TEMPORALIS
provides some bulk to the temporal cavity
EFFECT OF TEMPORALIS
temporalis and masseter
MUSCLES OF MASTICATION
along face, below zygomatic arch
LOCATION OF MASSETER
mastication; closes the mandible
FUNCTION OF MASSETER
provides bulk to side of cheek
EFFECT OF MASSETER
Compresses lacrinal sac (tear duct) closes eyelid when contracted
FUNCTION OF OBICULARIS OCULI
sphincter muscle around eyelid
LOCATION OF OBICULARIS OCULI
optic facial sulci or crow’s feet (typically 1st facial marking to appear)
EFFECT OF OBICULARIS OCULI
Frowning muscle, pyramid shaped muscle
CURRUGATOR
under medial area of eyebrow
LOCATION OF CURRUGATOR
draws eyebrows downward and medial when contracted
FUNCTION OF CURRUGATOR
forms vertical intercilliary sulci (vertical wrinkles between the eyes)
EFFECT OFCURRUGATOR
“Lifter of upper eyelid”
LEVATOR PALPEBRAE SUPERIORIS
runs from inside of the eye socket to the superior tarsal plate of the eyelid
LOCATION OF
– raises the upper eyelid (can sever to keep eyelid shut)
FUNCTION OF
helps to form palpebral fold
EFFECT OF