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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 |
Created by:
jadenite
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