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trunk and neck muscl
Question | Answer |
---|---|
deltoid | arm abduction |
levator scapulae ventralis | elevates/adducts scapula |
scalene | elevates first two ribs, flexes and rotates neck |
subscapularis | prime medial rotator of humerus, stabilizes shoulder joint |
supraspinatus | part of rotator cuff muscle, stablizer of shoulder joing |
infraspinatus | part of rotator cuff, stablizes shoulder |
sternocleidomastoid | prime mover of head flexion, rotation head when one side acts alone |
mylohyoid | helps in swallowing-moves tounge |
digastric | opens mouth, depresses mandible |
int. intercostals | depresses ribs |
errector spinae(O&I) | O:sacrum I:ribs/skull. extend vertebral column, flexes laterally |
latissimus dorsi | arm extension, arm adductor-swimming muscle |
trapezius | adducts and depresses scapula |
rhomboideus | elevate,adduct,rotate scapula downward to square shoulder/paddle a canoe |
rectus abdominus(O&I) | flexes/rotates lumbar region of vertebral column O:pubis, I: ribs and xiphoid process |
internal oblique | flexes verterbral column, compresses abdomen |
tendinous intersection | creates 6pack |
pectoralis major | primary arm flexor, rotates arm medially-climbing, throwing, pushing |
pectoralis minor | moves scapula forward and downward |
serratus anterior | abducts and rotates scapula upward, boxers punch |
external intercostals | elevate ribs during inspiration |
masseter(O&I) | closes mouth, elevates mandilbe O:zygomatic process of maxilla, I:angle and ramus of mandible |
sternohyoid | helps in swallowing.moves tounge |
temporalis(O&I) | elevates and retracts mandible O:temporal fossa, I: coronoid process of mandible |
orbicularis oculi | closes eye.blinks |
platysma | depresses/lowers mandible, pulls lower lip to grimace |
buccinator | compresses cheek to suck straw |
frontalis | raises eyebrows |
corrugator supercilli | pulls eyebrows together |
zygomaticus major and minor | smile |
orbicularis oris | closes and protrudes lips |