RA 1 Exam 2 Muscle Flashcards
o Wrinkles run \_\_\_\_ to muscle fibers o May be more pronounced on males o When muscle tone is lost, tissue \_\_\_\_ o Gravitational pull: · Living it's \_\_\_\_\_ · Dead it's \_\_\_\_\_
Transverse
Sag
Inferior
Posteriro
Muscles of cranium face and neck. In restorative art used for:
· Muscle bulk and contour effect - topographical surface form
· Continual muscle contraction – leaves markings (wrinkles) on face
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
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
PARTS:
§ frontal belly = frontalis
§ occipital belly = occipitalis
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
draws scalp posteriorly or anteriorly and raises eyebrows
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
MUSCLES OF MASTICATION
TEMPORALIS (2)
MASSETER (2)
EFFECT ON SURFACE FORM:
§ When contracted raises eyebrows
§ Continued contractions forms TRANSVERSE FRONTAL SULCI (Worry lines/Wrinkles)
OCCIPIOFRONTALIS MUSCLE (EPICRANIUS)
Broad fan shaped muscle
located along temporal bone
TEMPORALIS (2)
mastication (chewing); closing the mandible and some side to side movement
TEMPORALIS (2)
provides some bulk to the temporal cavity
TEMPORALIS (2)
along face, below zygomatic arch
MASSETER (2)
mastication; closes the mandible
MASSETER (2)
provides bulk to side of cheek
MASSETER (2)
MUSCLES OF EYE
OBICULARIS OCULI
CURRUGATOR
LEVATOR PALPEBRAE SUPERIORIS
true sphincter muscle around eyelid. Closes eyelid when contracted
OBICULARIS OCULI
Closes eyelid when contracted compresses lacrinal sac (tear duct) closes eyelid when contracted
OBICULARIS OCULI
forms Frowning Muscle, pyramid shaped muscle
CURRUGATOR
under medial area of eyebrow
CURRUGATOR
forms OPTIC FACIAL SULCI (A) or Crow’s Feet (typically 1st facial marking to appear)
OBICULARIS OCULI
draws eyebrows downward and medial when contracted
CURRUGATOR
“Lifter of upper eyelid”
LEVATOR PALPEBRAE SUPERIORIS
forms VERTICAL INTERCILLIARY SULCI (vertical wrinkles between the eyes)
CURRUGATOR
runs from inside of the eye socket to the superior tarsal plate of the eyelid
LEVATOR PALPEBRAE SUPERIORIS
raises the upper eyelid (can sever to keep eyelid shut)
LEVATOR PALPEBRAE SUPERIORIS
along inferior margin of upper eyelid, thin layer of tissue
SUPERIOR TARSUS
helps to form Palpebral Fold
LEVATOR PALPEBRAE SUPERIORIS
MUSCLE OF THE NOSE
PROCERUS
along superior margin of lower eyelid
INFERIOR TARSUS
very thin vertical muscle from between the eyebrows to bottom of nose bone
PROCERUS