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Gross > Muscles Of Gluteal And Posterior Thigh > Flashcards

Muscles Of Gluteal And Posterior Thigh Flashcards

0
Q

Gluteus Maximus insertion

A

Most fibers end in ilio tibial tract which inserts into lateral condyle of tibia
Some fibers insert on gluteal tuberosity of femur

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1
Q

Gluteus Maximus origin

A

Ilium posterior to posterior gluteal line
Dorsal surface of sacrum and coccyx
Sacrotuberous ligament

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2
Q

Gluteus Maximus innervation

A

Inferior gluteal nerve

L5, s1, s2

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3
Q

Gluteus Maximus action

A

Extends hip joint between flexed and standing positions and assists in lateral rotation
Steadies thigh and assists in rising from sitting position

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4
Q

Gluteus medius origin

A

External surface of ilium between anterior and posterior gluteal lines

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5
Q

Gluteus medius insertion

A

Lateral surface of greater trochanter of femur

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6
Q

Gluteus medius innervation

A

Superior gluteal nerve

L4, l5, s1

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7
Q

Gluteus medius action

A

Abduct and anterior portions medially rotate hip joint

Keep pelvis level when opposite limb is elevated

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8
Q

Gluteus minimus origin

A

External surface of ilium between anterior and inferior gluteal lines

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9
Q

Gluteus minimus insertion

A

Anterior surface of greater trochanter of femur

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10
Q

Gluteus minimus innervation

A

Superior gluteal nerve l4, l5, s1

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11
Q

Gluteus minimus action

A

Abduct and anterior portions medially rotate hip joint

Keep pelvis level when opposite limb is elevated

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12
Q

Tensor fasciae latae origin

A

Anterior superior iliac spine

Anterior part of iliac crest

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13
Q

Tensor fasciae latae insertion

A

Ilio tibial tract which attaches to lateral condyle of tibia

Gerdy tubercle

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14
Q

Tensor fasciae latae innervation

A

Superior gluteal nerve l4, l5, s1

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15
Q

Tensor Fasciae latae action

A

Flexes hip joint

Acts with gluteus Maximus to stabilize the extended knee joint

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16
Q

Semi tendinous origin

A

Ischial tuberosity

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17
Q

Semitendinosus insertion

A

Medial surface of superior part of tibia

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18
Q

Semitendinosus innervation

A

Tibial division of sciatic nerve

L5, s1, s2

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19
Q

Semitendinosus action

A

Extend hip joint, flex knee joint and rotate the leg medially when knee is flexed
When hip and knee are flexed, can extend trunk

20
Q

Semimembranosus origin

A

Ischial tuberosity

21
Q

Semimembranosus insertion

A

Posterior part of medial condyle of tibia

Reflected attachment forms oblique popliteal ligament to lateral femoral condyle

22
Q

Semimembranosus innervation

A

Tibial division of sciatic nerve l5, s1, s2

23
Q

Semimembranosus action

A

Extend hip joint
Flex knee joint and rotate leg medially when knee is flexed
When hip and knee are flexed, can extend trunk

24
Q

Biceps femoris origin

A

Long head: ischial tuberosity

Short head: linea aspera and lateral supracondylar line of femur

25
Q

Biceps femoris insertion

A

Lateral side of head of fibula ; tendon is split at this site by fibulae collateral ligament of knee

26
Q

Biceps femoris innervation

A

Long head: tibial division of sciatic nerve l5, s1 s2

Short head: common fibulae division of sciatic nerve l5, s1, s2

27
Q

Biceps femoris action

A

Flexes knee joint and rotates it laterally when knee is flexed
Extends hip joint like when starting to walk

28
Q

Piriformis origin

A

Anterior surface of 2nd to 4th sacral segments

Superior margin of greater sciatic notch and sacrotuberous ligament

29
Q

Piriformis insertion

A

Superior border of greater trochanter of femur

30
Q

Piriformis innervation

A

Branches of anterior rami of s1, s2

31
Q

Piriformis action

A

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum (stabilizes hip joint)

32
Q

Obturator internus origin

A

Pelvic surface of ilium and ischium

Obturator membrane

33
Q

Obturator internus insertion

A

Medial surface of greater trochanter (trochanteric fossa) of femur

34
Q

Obturator internus innervation

A

Nerve to obturator internus

L5, s1

35
Q

Obturator internus action

A

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum (stabilizes hip joint)

36
Q

Superior gemelli origin

A

Ischial spine

37
Q

Inferior gemelli origin

A

Ischial tuberosity

38
Q

Superior gemelli insertion

A

Medial surface of greater trochanter (trochanteric fossa) of femur

39
Q

Inferior gemelli insertion

A

Medial surface of greater trochanter (trochanteric fossa) of femur

40
Q

Superior gemelli innervation

A

Nerve to obturator internus l5, s1

41
Q

Inferior gemelli innervation

A

Nerve to quadratus femoris

L5, s1

42
Q

Superior gemelli action

A

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum (stabilizes hip joint)

43
Q

Inferior gemelli action

A

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum ( stabilizes hip joint)

44
Q

Quadratus femoris origin

A

Lateral border of ischial tuberosity

45
Q

Quadratus femoris insertion

A

Quadrate tubercle on intertrochanteric crest of femur and area inferior to it

46
Q

Quadratus femoris innervation

A

Nerve to quadratus femoris l5, s1

47
Q

Quadratus femoris action

A

Laterally rotates hip joint

Also pulls femoral head into acetabulum to stabilize hip joint/ pelvis

Gross (31 decks)

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