anatomy part 1b-LE

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anatomy part 1b-LE
2013-10-16 23:01:26
anatomy part 1b LE

anatomy part 1b- LE
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  1. 6 major movements of the hip joint:
    • flexion/  extension
    • ABduction/  ADDuction
    • lateral/  medial rotation
  2. 5 muscle groups that control movement of the hip joint:
    • short rotators (5)
    • adductors (5)
    • abductors (3)
    • flexors (4)
    • extensors (4)
  3. which muscle group lies the deepest?
    short rotators
  4. what are the 5 muscles of the short rotators?
    • piriformis
    • obturator externus
    • obturator internus
    • gemellus superior and inferior
    • quadratus femoris
  5. which muscle travels thru the greater sciatic foramen?
  6. what structure lies deep to the piriformis?
    sciatic nerve
  7. what does the piriformis arise from?
    the sacrum
  8. all the short rotators converge onto the:
    back of the femur just medial to the greater trochanter (Trochanteric fossa)
  9. the obturator internis and externis lie on each side of the:
    obturator membrane
  10. what structure exits the lesser sciatic foramen and does a 90 degree turn?
    obturator internis
  11. what structure allows free movement of the muscles over posterior border of the ischium?
    Bursa of the obturator internis
  12. the Gemelli superior and inferior arise from:
    and insert:
    • superior: ischial spine
    • inferior: ischial tuberosity
    • insert: medial to the greater trochanter (Trochanteric fossa)
  13. quadratus femoris inserts on:
    quadrate tubercle on intertrochanteric crest and inferior to it
  14. the short rotators function to:
    pull bacl on the femur medially and produce lateral rotation of the hip joint
  15. what are the adductor muscles?
    • adductor magnus
    • adductor brevis
    • adductor longus
    • pectinus
    • gracilis
  16. which of these is the largest of the LE?
    adductor magnus
  17. what is the gap in the adductor magnus called?
    adductor hiatus
  18. what structures travel thru the adductor hiatus?
    main blood vessels of the leg- femoral artery
  19. adductor magnus arises from:
    inserts on:
    • arises from outer border of ischial pubic ramis
    • UPPER part inserts along linea aspera
    • LOWER part inserts on adductor tubercle of femur
  20. adductor brevis and longus attach to:
    insert on:
    • attach to body of the pubis
    • insert on femur- next to adductor magnus

    • Brevis= ABove
    • Longus= Below
  21. which muscle is the shortest of the adductors?
  22. pectineus attachments:
    • superior ramusof the pubis
    • pectineal line of the femur
  23. which adductor is the most medial?
  24. attachments of the gracilis?
    • body of inferior ramus of the pubis
    • superior part of medial surface of tibia
  25. what is the main function of the adductors?
    adduction of the hip joint
  26. what are the ABductor muscles?
    • gluteus minimus
    • gluteus medius
    • tensor fascia lata
  27. attachments of the gluteus minimus:
    • wing of the ilium
    • anterior surface of the greater trochanter
  28. attachments of the gluteus medius:
    • arises superiorly compared to the minimus
    • lateral surface of the greater trochanter
  29. attachments of the tensor fascia lata:
    • iliac crest
    • iliotibial tract
  30. a continuous sheet of dense fibrous tissue that surrounds all muscles of the thigh:
    tensor fascia lata
  31. along the outer-lateral part of the tensor fascia lata is a VERY dense part called:
    iliotibial tract
  32. iliotibial tract acts as the tendon insertion for:
    • gluteus maximus
    • tensor fascia lata
  33. the iliotibial tract attaches:
    proximal ileum to proximal tibia
  34. what are the flexor muscles?
    • psoas major
    • iliacus
    • rectus femoris
    • sartorius
  35. which muscles pass under the inguinal ligament & over the pubic ramis?
    • psoas major
    • iliacus
  36. attachments for psoas major?
    • lumbar spine (transverse processes of all 5 lumbar veterbra)
    • lateral portions of bodies & veterbral discs
  37. attachments for iliacus?
    • iliac crest (inner aspect)
    • lesser trochanter
  38. attachments for rectus femoris:
    • 2 heads on AIIS & slightly superior to acetabulum
    • tibial tuberosity
  39. attachments for Sartorius:
    • ASIS
    • superior part of medial surface of tibia
  40. function of Sartorius:
    helps to flex the hip & it can also produce lateral rotation @ the hip
  41. pathway for the Sartorius:
    runs in a spiral distally from lateral to medial
  42. what are the extensor muscles?
    • biceps femoris
    • semimembranosis
    • semitendinosis
    • gluteus maximus
  43. what muscles make up the hamstrings?
    • biceps femoris
    • semimembranosis
    • semitendinosis
  44. attachments for the biceps femoris:
    • 2 heads-
    • long head: ischial tuberosity-head of the fibula
    • short head: linea aspera & lateral supracondylar line- head of the fibula
  45. attachments for semimembranosis and semitendinosis:
    ischial tuberosity-medial aspect of the tibia
  46. attachments for the gluteus:
    • back of the ileum
    • posterior side of the sacrum
    • sacrotuberous ligament
    • upper 3/4 inserts onto iliotibial tract
    • lower 1/4 gluteal tuberosity (more deeply)
  47. function of the gluteus maximus:
    extends the hip from full flexion
  48. which is an antigravity muscle?
    gluteus maximus
  49. is the gluteus maximus a primary muscle used when walking?
    • NO
    • it only acts at the hip
  50. attachments for the inguinal ligament:
    • ASIS
    • pubic tubercle
  51. the inguinal ligament has a lower edge of a tendonis sheet called:
    External Oblique Aponeurosis
  52. the gap betwn the inguinal ligament & pubic ramis is occupied by:
    • iliacus
    • psoas
    • femoral nerve, artery, & vein
    • inguinal lymph nodes
  53. what are the borders of the femoral triangle?
    • Sartorius- laterally
    • adductor longus- medially
    • inguinal ligament- superiorly