Anatomy sec 10 Hip Muscles

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bradley.knox
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186647
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Anatomy sec 10 Hip Muscles
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2012-12-02 17:41:36
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anatomy
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  1. What type of action do the piriformis, superior/inferior gemellus, obturator internus/externus and quadratus femois?
    Lateral rotators (posterior)
  2. what type of action do the illiacus, Psoas major, rectus femoris, and sartorius conduct?
    Flexors (Anterior)
  3. What type of action do the gluteal maximus, biceps femoris, semi-mebranosus, and semi-tendinosus conduct?
    Extensor (posterior)
  4. What muscles make up the adductors?
    • Adductor magnus, brevis, and longus
    • pectineus
    • gracilis
  5. What muscles make up the abductors?
    • gluteal minimus
    • gluteal medius
    • tensor fascia lata
  6. What is the orgin, insertion, and action of the piriformis?
    • Origin = ¬†anterior surface of sacrum and sacrotubrous ligament
    • Insertion = superior border of greater trochanter
    • Action = ¬†lateral rotation, abduction
  7. What is the orgin of the superior gemellus?
    ischial spine
  8. What is the orgin of the inferior gemellus?
    ischial tuberosity
  9. What is the insertion of the superior and inferior gemellus?
    Greater trochanter
  10. What is the orgin and insertion of quadratus femoris?
    • Origin = ischial tuberosity
    • Insertion = ¬†quadrate tubercle
  11. What is the strongest lateral rotator muscle?
    Quadratus Femoris
  12. What three extensor muscles arise from the ischial tuberocity?
    • semimenbranosus
    • semitendenosus
    • Biceps femoris
  13. What is the largest extensor muscle that acts only on the hip?
    Gluteus maximus
  14. What is the insertion of the the semimembranosus?
    medial condyle of tibia
  15. What is the insertion of the semitendinosus?
    medial surface of superior tibia
  16. What is the insertion of the biceps femoris?
    lateral head of fibula
  17. What is the innervation of all the hamstring muscles?
    tibial division of sciatic nerve
  18. What actions do all the hamstring muscles produce?
    • extend thigh
    • flexion of leg
  19. What hamstring muscles medially rotate the femur?
    • semitendinosus
    • semimebranosus
  20. what hamsting muscle laterally rotates the leg?
    biceps femoris
  21. What is the orgin and insertion of the gluteus maximus?
    • origin = back of ilium
    • insertion = iliotibial tract and gluteal tuberosisty (femur)
  22. what is the innervation of the gluteus maximus?
    inferior gluteal nerve
  23. What muscle hip muscle is one of two main anti gravity muscles?
    Gluteus maximus
  24. What action do the gluteus minimus and medius conduct?
    Abduction and medially rotates thigh
  25. What causes a positive trendelenburg sign?
    injury of gluteus medius and minimus
  26. What is the trendelenburg sign?
    dropping of pelvis on leg being raised while walking
  27. where is the lesion found in a patient with trendelenburg sign?
    the contralateral side of droped pelvis
  28. What two muscles attach to the illio-tibial tract?
    • gluteus maximus
    • tensor fascia lata
  29. What is the orgin of the psoas major?
    transverse processes of T12-L5
  30. What is the innervation of the illiacus and psoas major?
    • Iliacus = Femoral nerve
    • Psoas = ventral rami L1, L2, L3
  31. What nerve innervates all anterior muscles of the hip joint?
    Femoral nerve which is made up of the ventral rami of L1-L3
  32. What muscle is the major flexor of the femur?
    Iliopsoas
  33. What is the origin of the Rectus Femoris?
    Anterior inferior iliac spine
  34. What is the longest muscle in the body?
    Sartorius
  35. What is the origin of the sartorius?
    Anterior superior iliac spine
  36. What is the largest muscle of the hip adductors?
    Adductor magnus
  37. What is the origin of the adductor and hamstring part of the adductor magnus?
    • adductor part = inferior ramus of pubis and ischium
    • Hamstring part = ischial tuberosity
  38. What is the insertion of the adductor and hamstring part of the adductor magnus?
    • adductor part = gluteal tuberosity, linea aspera, medial supracondylar line
    • Hamstring part = adductor tubercle of femur
  39. What is the innervation of the adductor and hamstring parts of the adductor magnus?
    • adductor = obturator nerve
    • hamstring = tibial part of sciatic nerve
  40. What is the action of the hamstring and adductor parts of the adductor magnus?
    • hamstring = extension of thigh
    • adductor = adduction of thigh
  41. What is the origin and insertion of the adductor longus?
    • origin = body of pubis
    • insertion = linea aspera
  42. What is the innervation of the adductor longus?
    Obturator nerve
  43. What nerve innervates all the hip adductor muscles?
    Obturator nerve
  44. What is the insertion of the adductor brevis?
    pectineal line and linea aspera
  45. What is the origin and insertion of the Pectineus?
    • origin is superor ramus of pubis
    • Insertion = pectineal line
  46. What the only adductor muscle that is innervated by a nerve other than the obturator nerver?
    Pectineus is also innervated by the femoral nerve
  47. What is the weakest adductor muscle that also crosses the knee joint?
    Gracilis
  48. What nerve innervates all anterior muscles?
    Femoral nerve
  49. What nerve innervates the posterior muscles of the hip joint and what is the excetption?
    • Tibial nerve
    • exception = short head biceps (femoral nerve)
  50. What nerve innervates all the medial muscles of the hip joint and what is the exception?
    • Obturator nerve
    • Exception = pectineus (femoral nerve) Hamstring adductor magnus (sciatic nerve)
  51. What are the boundaries of the femoral triangle?
    • Superior = inguinal ligament
    • Lateral = sartorius
    • Medial = adductor longus
  52. What makes up the floor of the femoral triangle (scarpa)?
    • Iliopsoas (lateral)
    • pectinus (medial)
  53. What are the contents of the femoral triangle?
    • Femoral vein (medial)
    • Femoral artery
    • Femoral nerve (lateral)
  54. What nerve and muscle are the main cause of a positive trendelenberg test?
    • Gluteus medius
    • superior gluteal nerve
  55. What is the key muscle in the gluteal region?
    piriformis
  56. What structures pass above the piriformis?
    Superor gluteal nerve, artery and veins
  57. What structures pass below the piriformis?
    inferior gluteal nerve and vessels and sciatic nerve
  58. What muscle passes through the piriformis (on occasion)?
    sciatic nerve
  59. What is located in the upper medial quadrant of the gluteal region?
    superior gluteal nerve
  60. What is located in the inferiomedial quadrant of the gluteal region?
    Inferior gluteal nerve
  61. What passes through the inferiolateral quadrant of the gluteal region?
    sciatic nerve

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