Muscle Origins, Insertions, Actions, and Innervations of the lower limb

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joeman6740
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127014
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Muscle Origins, Insertions, Actions, and Innervations of the lower limb
Updated:
2012-01-10 16:36:39
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Muscle Origins Insertions Actions Innervations lower limb
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Muscle Origins, Insertions, Actions, and Innervations of the lower limb
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  1. Gluteus Maximus
    • O-posterior portion of ilium; post. lower part of sacrum and coccyx
    • I-gluteal tuberosity and iliotibial tract of fascia lata
    • A-extension and lateral rotation of hip (thigh)
    • N-inferior gluteal nerve
  2. gluteus medius
    • O-outer surface and crest of ilium
    • I-greater trochanter of femur
    • A-abducts hip (thigh)
    • N-superior gluteal nerve
  3. gluteus minimus
    • O-Outer surface of ilium
    • I-greater trochanter of femur
    • A-Abducts thigh
    • N-Superior gluteal nerve
  4. tensor fasciae latae
    • O-anterior portion of crest of ilium
    • I-Illiotibial trat of fascia lata
    • A-flex, abduct hip (thigh)
    • N-superior gluteal nerve
  5. piriformis
    • O-anterior sacrum
    • I-greater trochanter of femur
    • A-Lateral rotation of hip (thigh)
    • N-N. to piriformis
  6. psoas major
    • O-all lumbar vertebrae
    • I-lesser trochanter of femur
    • A-Flexes thigh; flexes trunk (or flexes hip)
    • N- Lumbar nerves L1-L3
  7. iliacus
    • O-iliac fossa
    • I-Lesser trochanter of femur
    • A-flexes hip
    • N-femoral n.
  8. inguinal ligament
    this very important landmark structure extends from the ANTERIOR SUPERIOR ILIAC SPINE to the PUBIC TUBERCLE. It marks the division between the trunk and the thigh
  9. sartorius
    • O-anterior superior iliac spine
    • I-upper part of medial surface of tibia
    • A-flexes leg and thigh
    • N-Femoral n.
  10. rectus femoris
    • O-anterior inferior iliac spine; superior margin of acetabulum
    • I-tibial tuberosity
    • A-extension of leg
    • N-femoral n.
  11. vastus lateralis
    • O-lateral lip of linea aspera
    • I-tibial tuberosity
    • A-extension of leg
    • N-femoral n.
  12. vastus medialis
    • O-medial lip of linea aspera
    • I-tibial tuberosity
    • A-extension of leg or knee
    • N-femoral n.
  13. vastus intermedius
    • O-anterior shaft of upper femur
    • I-Tibial tuberosity
    • A-extension of leg or knee
    • N-femoral n.
  14. gracilis
    • O-pubic bone
    • I-upper part of medial surface of tibia
    • A-adduction of hip (thigh)
    • N-Obturator n.
  15. pectineus
    • O-pubis
    • I
    • A-adducts, flexes hip (thigh)
    • N-femoral n.
  16. adductor longus
    • O-pubic bone
    • I
    • A-adducts hip
    • N-Obturator n.
  17. adductor brevis
    • O-pubis
    • I-
    • A-Adducts hip
    • N-obturator n.
  18. adductor brevis
    • O-ischium
    • I-
    • A-adducts hip
    • N-Obturator n.
  19. Biceps femoris - long head
    • O-ischial tuberosity
    • I-head of fibula
    • A-flexes leg; extends thigh
    • N-Tibial n. (division of sciatic)
  20. Biceps Femoris - short head
    • O-shaft of femur
    • I-with the long head, they share a common tendon (head of fibula)
    • A-Flexes leg
    • N-Common fibular (peroneal) n.
  21. semitendinosus
    • O-ischial tuberosity
    • I-Upper part of the medial tibia
    • A-Flexes leg; extends thigh
    • N-Tibial n.
  22. semimembranosus
    • O-Ischial tuberosity
    • I-Posterior upper tibia
    • A-Flexes leg and extends thigh
    • N-Tibial n
  23. Tibialis anterior
    • O-
    • I-
    • A-dorsiflexes and inverts foot
    • N-Deep fibular (peroneal) n.
  24. extensor digitorum longus
    • O-
    • I-
    • A-extends digits 2-5; dorsiflexes foot
    • N-Deep fibular (peroneal) n.
  25. Extensor hallucis longus
    • O-
    • I-
    • A-extends hallux; dorsiflexes foot
    • N-Deep fibular (peroneal) n.
  26. fibularis (peroneus) tertius
    • O-
    • I-
    • A-Dorsiflexes and everts foot
    • N-Deep fibular (peroneal) n.
  27. Fibularis (peroneus) longus
    • O-
    • I-
    • A-plantar flexes and everts foot
    • I-Superficial fibular (peroneal) n.
  28. Fibularis (peroneus) brevis
    • O-
    • I-
    • A-plantar flexes and everts foot
    • N-superficial fibular (peroneal) n.
  29. Gastrocnemius
    • O-
    • I-
    • A-Flexes leg; plantar flexes foot
    • N-Tibial n.
  30. Soleus
    • O-
    • I-
    • A-Plantar flexes foot
    • N-Tibial n.
  31. Plantaris
    • O-
    • I-
    • A-Flexes leg; plantar flexes foot
    • N-Tibial n.
  32. Popliteus
    • O-
    • I-
    • A-Flexes leg; rotates tibia medially
    • N-Tibial n.
  33. Flexor hallucis longus
    • O-
    • I-
    • A-flexes hallux; plantar flexes foot
    • N-Tibial n.
  34. Flexor digitorum longus
    • O-
    • I-
    • A-flexes digits 2-5; plantar flexes and inverts foot
    • N-tibial n.
  35. Tibialis posterior
    • O-
    • I-
    • A-Plantar flexes and inverts foot
    • N-Tibial n.
  36. Extensor Digitorum brevis
    • O-
    • I-
    • A-Extends digits 1-4
    • N-Deep fibular (peroneal) n.
  37. Abductor hallucis
    • O-
    • I-
    • A-Abducts hallux
    • N-Medial plantar n.
  38. Flexor digitorum brevis
    • O-
    • I-
    • A-Abducts fifth digit
    • N-Lateral plantar n.

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