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Muscle terms and act

epicranius frontalis raises eyebrows, wrinkles forehead
epicranius occipitus tenses and retracts scalp
orbicularis oculi closes eye
zygomaticus retracts and elevates corner of mouth (smile)
orbicularis oris compresses lips (kiss)
buccinator compresses cheeks (whistle)
temporalis elevates mandible
external intercostals elevates rib for inspiration
internal intercostals depresses ribs for expiration
diaphragm contraction expands thorax
pectoralis major flexion of arm, raises chest for forced inspiration
pectoralis minor glenoid cavity moves inferiorly
serratus anterior moves scapula toward chest wall
rectus abdominus flexes spine
triceps brachii extension at elbow
coracobrachialis adduction at shoulder
biceps brachii flexion at elbow
brachioradialis flexion at elbow
brachialis flexion at elbow
rhomboid major retraction (pulls medially) of scapula
rhomboid minor retraction (pulls medially) of scapula
latissimis dorsi adduction and extension at shoulder
erector spinae extension of spine (upright posture)
triceps brachii extension at elbow
coracobrachialis adduction at shoulder
biceps brachii flexion at elbow
brachioradialis flexion at elbow
brachialis flexion at elbow
transverse abdominus supports spine
masseter elevates mandible
digastric depresses mandible
platysma depresses mandible and tenses skin of neck
sternocleidomastoid flex the neck/ bends head up and face to opposite side
trapezius elevate, retract, depress, rotate scapula/ extend neck
deltoid abduction or flexion or extension or rotation at shoulder
teres major medial rotation at shoulder
teres minor lateral rotation at shoulder, rotator cuff
subscapularis medial rotation at shoulder, rotator cuff
infraspinatus lateral rotation at shoulder, rotator cuff
supraspinatus abduction at shoulder, rotator cuff
tendons a structure that connects muscle to bone
aponeurosis are layers of flat broad tendons.
origin attached to bone is not moved by the contraction of the muscle.[
insertion end of the muscle
Created by: jadenite



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