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Front
External Oblique (A)
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Back
action: bilaterally - flexes the vertebral column, compresses abdominal contents. unilaterally - laterally flexes the vertebral column to same side, rotates vertebral column to opposite side
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External Oblique (A)
action: bilaterally - flexes the vertebral column, compresses abdominal contents. unilaterally - laterally flexes the vertebral column to same side, rotates vertebral column to opposite side
External Oblique (O)
orgin: lower 8 ribs
External Oblique (I)
insertion: anterior art of the iliac crest, abdominal aponeurosis to linea alba.
Quadratus Lumborum (A)
action: unilaterally - laterally tilt pelvis, laterally flexes the vertebral column to same side. bilaterally - fixes last rib during inhalation and forced exhalation.
Quadratus Lumborum (O)
orgin: posterior iliac crest.
Quadratus Lumborum (I)
insertion: last rib, transverse processes of 1 - 4 lumbar vertebrae.
Gluteus Maximus (A)
action: all fibers: extend the hip,(coxal joint). laterally rotate hip, abduct hip. lower fibers: adduct hip.
Gluteus Maximus (O)
orgin: coccyx, edge of sacrum, posterior iliac crest,sacrotuberous and sacroiliac ligaments.
Gluteus Maximus (I)
insertion: gluteal tuberosity (upper fibers) and iliotibial tract (lower fibers).
Iliopsoas (A)
action: flexes hip, (coxal joint). laterally rotates hip,(coxal joint). adducts hip.(coxal joint).
Iliopsoas (O)
orgin: psoas major - bodies and transverse processes of lumbar vertebrae. iliacus - iliac fossa.
Iliopsoas (I)
insertion: lesser trochanter of the femur.
Piriformis (A)
action: laterally rotates hip, abducts thigh when hip is flexed.
Piriformis (O)
orgin: anterior surface of sacrum.
Piriformis (I)
insertion: greater trochanter.
Gluteus medias (A)
action: all fibers - abduct the hip. (coxal joint). anterior fibers - flex hip, medially rotate hip. posterior fibers - extend hip, laterally rotate hip.
Gluteus medias (O)
orgin: gluteal surface of the ilium between iliac crest and posterior and anterior gluteal lines.
Gluteus medias (I)
insertion: greater trochanter.
Tensor fasciae latae (A)
action: flex hip, medially rotate hip, abduct hip.
Tensor fasciae latae (O)
orgin: iliac crest, posterior to the ASIS.
Tensor fasciae latae (I)
insertion: ilitotibial tract.
Tibilias posterior (A)
action: invert foot, plantarflex ankle.
Peroneus longus (A)
action: evert foot, assists to plantarflex ankle. (talocrural joint).
Tibilias posterior (O)
orgin; proximal 2-thirds of lateral fibula.
Tibilias posterior (I)
insertion: base of 1st metatarsal, medial cuneiform.
Extensor digitorum longus (A)
action: extend the 2 - 5 toes, (metatarsophalangeal and interphalangeal joints), dorsiflex ankle, evert foot.
Extensor digitorum longus (O)
orgin: lateralcondyle of tibia, proximal anterior shaft of fibula interosseous membrane.
Extensor digitorum longus (I)
insertion: middle and distal phalanges of 2 - 5 toes.
Extensor digitorum (A)
action: extend the 2 - 5 fingers (metacarpophalangeal and interphalangeal joints. assist to extend wrist (radiocarpal joint).
Extensor digitorum (O)
orgin: common extensor tendon from lateral epicondyle of humerus.
Extensor digitorum (I)
insertion: middle and distal phalanges of 2 - 5 fingers.
Flexor carpi radials (A)
action: flex wrist, abduct wrist, flex elbow.
Flexor carpi radials (O)
orgin: common flexor tendon from medial epicondyle.
Flexor carpi radials (I)
insertion: base of 2 - 3 metacarpals.
Erector Spinae Group (A)
Action: bilaterally - extends the vertebral coloumn, laterrally - laterally flexes vertebral column to same side
Erector Spinae Group (O)
orgin: common tendon that attaches to the posterior surface of sacrum, iliac crest, spinous processes of the lumbar, and last 2 thoracic vertebrae
Erector Spinae Group (I)
Insertion: various attachments at the posterior ribs, spinous and transverse processes of the thoriac and cervical vertebrae, and mastoid process of temporal bone
Erector Spinae Group (3 muscles)
3 muscles are spinalis, longissimus, iliocostalis
Rectus Abdominis (A)
action: flexes the vertebral column
Rectus Abdominis (O)
orgin: pubic crest, pubic synphysis
Rectus Abdominis (I)
insertion: cartilage of 5,6,7 ribs and xiphpid process
Internal Oblique (A)
action; bilaterally - flexes the vertebral column, compresses abdominal contents. unilaterally - laterally flexes vertebral column to the same side, rotates vertebral column to same side.
Internal Oblique (O)
orgin: lateral inguinal ligament, iliac crest, thoracolum
Internal Oblique (I)
insertion: internal surface of lower 3 ribs abdominal aponeuroses to linea alba
Peronus Longus (O)
orgin: proximal two thirds of lateral fibula
Peronus Longus (I)
insertion: base of the first metatarsal, medial cuneiform
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