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origin insertions and actions - gym instructor

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Muscles - upper leg, back, hip
Origin
Insertion
Action
Gluteus maximus   ilium sacrum coccyx   femur   hip extension (move thigh to the rear)  
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illipsoas hip flexor made up of 2 muscles (iliacus+psosas major)   ilium & lumbar vertebrae   femur   hip flexion & lateral rotation of thigh  
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Adductor Brevis (short) Adductor Longus- Adductor Magnus   pubis and ischium   femur   Brevis/longus - hip adduction, flexion & rotation - Magnus hip adduction flexion, extension & medial rotation  
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gluteus minimus   ilium   femur   hip abduction (moving away from centreline of body)  
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gluteus medius   ilium   femur   hip abduction (move leg away from centreline of body)  
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rectus abdominus   pubis   ribs and sternum   thoracic and lumbar forward flexion  
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external obliques   lower 8 ribs and pelvis   crest of pelvis & mid line of rectus adominus   lateral flexion of the vertebrae (rotate torso/stablizes abdomen)  
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transverse absominus (deep)   ilium, lumbar vertebrae, last 6 ribs   sternum and pubis   compress the abdomen (acts as a natural weight belt keeping insides in)  
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erector spinea   ilium, lumbar and thoracic vertebrae   cervical, thoracic, lumbar vertebrae and the ribs   lumbar and thoracic vertebrae extension  
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latissimus dorsi (largest muscle of the back)   thoracic and lumbar vertebrae, last 6 ribs, sacrum and ilium   humerus   shoulder adduction (pulls arm down towards pelvis)  
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internal obliques   iliac crest   ribs   compresses the abs - vertebrae lateral flexion (singularly)  
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multifidus (lies underneath erector spinea)   sacrum ilium & vertebrae   all above   verebral extension & rotation  
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quadratus lumborum - lower back base of spine   ilium   ribs & lumbar vertebrae   vertebral flexion & stabilisation  
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Created by: allisonhearsum
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