LE Actions

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Author:
tjminnie
ID:
134999
Filename:
LE Actions
Updated:
2012-02-13 18:53:53
Tags:
Leg Muscles
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Description:
Break a Leg!
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  1. Levator Ani and Coccygeus
    • suports the pelvic viscera and resists the downward movement produced by increased intra-abdominal pressure.
    • Contribute ot the sphincter urethrae and helpt to maintain the angle of the anorectal junciton, thus contributing to bladder and bowel continence
  2. psoas major
    • From above: FLEX hip, may assist in LAT rotation of hip
    • Bilaterally below: FLEX trunk (sit-up), increases the lumbra curvature (ANT Pelvic tilt)
  3. Iliopsoas
    • Acting from above ilopsoas FLEXhip and may assist in LAT rotation of hip
    • bilaterally from below: FLEX trunk on thigh as in sit-up
    • (psoas major increases the lumbar curvature)
  4. psoas minor
    assists psoas major in FLEX trunk
  5. Sartorius
    • FLEX, LAT rotation, ABD hip
    • FLEX and assists in MED rotation of knee
  6. Quadriceps
    • EXT knee
    • Rectus Femoris: assists in FLEX hip and ANT tilt of pelvis
  7. Obturator EXT
    • LAT rotates hip
    • may assist in ADD of hip
  8. Pectineus
    • ADD and FLEX hip
    • Assist in MED rotation
  9. ADDuctor longus
    • ADD and FLEX hip
    • assists w/ MED rotation
  10. ADDuctor brevis
    • ADD and FLEX hip
    • assists with MED rotation
  11. ADDuctor Magnus (ANT or obturator portion)
    ADDucts and FLEX hip
  12. ADDuctor Magnus (POST or hamstring portion)
    ADD and EXT hip
  13. Gracilis
    • FLEX and MED rotates knee
    • ADD hip
  14. Gluteus Maximus
    • EXT, LAT rotates hip
    • upper fibers: assist in hip ABD
    • lower fibers: assist in hip ADD
    • Stabilizes the extended knee through the iliotibial tract
  15. Gluteus Medius
    • ABD hip
    • ANT Fibers: MED rotate, assist in FLEX of hip
    • POST fibers: LAT rotate and assist in EXT of hip
  16. Gluteus minimus
    • ABD and MED rotates hip
    • assists in hip FLEX
  17. Tensor Fasciae latae
    • FLEX, MED rotate, and ABD hip
    • Stabilizes the EXT knee through the iliotibial tract
  18. Piriformis
    • LAT rotates the extended hip
    • ABD and MED rotates the flexed hip
  19. Obturator internus
    • LAT rotate the extended hip
    • ABD the flexed hip
  20. Gemelus superior
    • LAT rotate the extended hip
    • ABD the flexed hip
  21. Gemelus inferior
    • LAT rotate the extended hip
    • ABD the flexed hip
  22. Quadratus femoris
    LAT rotate hip
  23. Biceps Femoris
    • BOTH: flex and LAT rotate knee
    • Longhead: EXT and LAT rotate hip
  24. semitendinosus
    • FLEX and MED rotate knee
    • EXT and MED rotate hip
  25. Semimembranosus
    • FLEX and MED rotate knee
    • EXT and MED rotate hip
  26. Tibialis Anterior
    DF ankle and INV foot
  27. Extensor Hallucis longus
    • EXT big toe
    • DF ankle and inverts foot
  28. Extensor Digitorum Longus
    • EXT lateral 4 toes
    • DF ankle and everts foot
  29. Fibularis tertius
    DF ankle and EV foot
  30. Fibularis longus
    PF ankle and EV foot
  31. Fibularis Brevis
    PF ankle and EV foot
  32. Gastrocnemius
    • PF ankle
    • FLEX knee
  33. Soleus
    PF ankle
  34. Plantaris
    Assists gastroc in PF ankle and INV foot and FLEX knee
  35. Popliteus
    • IR tibia on femur
    • when tibia fixed: ER femur on tibia
    • unlocks knee joint at beginning of flexion
  36. Flexor Hallucis Longus
    • FLEX IP and MTP joints of big toe
    • Assists in PF of ankle and INV of foot
  37. Tibialis posterior
    • principal INV of foot
    • assists in PF ankle
  38. Extensor digitorum brevis
    assist long extensors in EXT medial 4 toes
  39. Extensor hallucis brevis
    assist in long exte4nsor in extending the big toe
  40. Abductor hallucis
    ABD and assists in FLEX of MTP joint of big toe
  41. Flexor digitorum brevis
    • FLEX PIP joint
    • assists in FLEX of MTP joints of lateral 4 toes
  42. Abductor digiti minimi
    ABD and assists in FLEX of MTP joint of little toe
  43. Quadratus plantae
    Straightens the line of pull of flexor digitorum longus tendon and assists in FLEX of lateral 4 toes
  44. lumbricals
    EXT IP joints
  45. Flexor hallucis brevis
    FLEX MTP joint of big toe
  46. Adductor hallucis
    ADD and assists in FLEX of MTP joint of big toe
  47. Flexor digit minimi brevis
    FLEX MTP joint of little toe
  48. Dorsal interossei
    • ABD 2nd, 3rd, and 4th toes
    • assists in FLEX of MTP joints and EXT of IP joints
  49. plantar interossei
    • ADD 3rd, 4th, 5th toes
    • assist in FLEX of MTP joints and EXT of IP joints

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