Question
click below
click below
Question
Normal Size Small Size show me how
Muscle terms and act
Question | Answer |
---|---|
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 |