MusclesList.xls - MUSCLE GROUP Facial expression ORIGIN...

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MUSCLE GROUPORIGININSERTIONACTIONFacial expressiongalea aponeuroticaskin of foreheadraise eyebrow, wrinkle forehead orbicularis oculiorbit, medial walleyelidscloses eyeorbicularis orisskin around mouthlipscloses and protrudes lips platysmadeltoid, pectoralis major; fasciamandible, face skindepresses mandiblezygomaticus majorzygomatic bonemouth skindraws angle mouth up/smile/laughbuccinatormaxilla & mandible, alveolar prorbicularis oriscompresses cheek (for blowing, sucking)Chewing and swallowingmasseterzygomatic archmandible elevates mandibletemporalisparietal bonemandible elevates mandibleActing on head/vertebral col.sternocleidomastoidsternum, clavicletemporal bone both flex neck, one rotates the head to oppscalenus mediusC2–C7, post. transverse pr.1st rib, manubriumelevates rib 1-2 in inspiration, flexes head splenius capitisoccipital, temporaltrapezius --3 divisions:trapezius- superior fibersexternal occipital protuberance, ligamelateral post. 1/3 of clavicleelevate scapula, laterally flex and rotate hetrapezius- middle fibersT1 - T5scapula-scapular spineretracts scapulatrapezius- inferior fibersT6 - T12scapula-scapular spinedepresses and retracts scapulaMUSCLE GROUPORIGININSERTIONACTIONActing on humerus + scapulapectoralis major clavicle, sternum humerus adducts & medially rotates humerus, flexes shoulatissimus dorsiT7-L5, sacrum, R8-12, ilium, scapula; spinous prhumerus retracts, medially rotates humerus and extedeltoid (anterior)clavicle, lateral thirdhumerus flexes shoulder and medially rotates humerdeltoid (middle)scapula, acromion prhumerusabducts humerusdeltoid (posterior)scapula, spinous prhumerus extends shoulder and laterally rotates humRotator Cuff Musclesinfraspinatusscapulahumeruslaterally rotates humerussupraspinatusscapula, suprspinous fossahumerus abducts humerussubscapularisscapula, subscapular fossahumerus medially rotates humerusfrontalis(frontal belly of epicranius)nuchal ligamentum +C7-T3 spinous processextends head at neck (both),lat. flex, rotate
teres minorscapula; lateral borderhumeruslaterally rotates humerusActing on pectoral girdlepectoralis minorribs 3-5scapula- coracoid processprotracts/depresses scapula OR elevates riserratus anteriorribs 1-9scapulaprotracts scapula, upward rotation, Abdlevator scapulaeC1-C4, transverse prscapula-superior angleelevates scapularhomboid major/minorT2-T5 spinous prscapula retracts, elevates, adducts, rotates scapulaActing on forearmbiceps brachii - 2 headsscapula, supraglenoid tubercleradiussupinates forearm, flexes elbow, flex arm abrachialishumerus, distal halfulna flexes elbowbrachioradialishumerus, distal halfradiusflexes elbow triceps brachii - 3 headsscapula, humerusolecranon process (ulna)extends elbowpronator tereshumerus, ulnaradius, lateral surfacepronates forearmMUSCLE GROUPORIGININSERTIONACTIONActing on wrist and fingers

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