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Anatomy Lecture Test 1 > Muscles of the Gluteal Region > Flashcards

Muscles of the Gluteal Region Flashcards

1
Q

What are the PROXIMAL attachments of the Gluteus Maximus (3)

A
  • Ilium posterior to posterior gluteal line
  • Dorsal surface of sacrum and coccyx
  • Sacrotuberous ligament
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2
Q

What are the DISTAL attachments of the Gluteus Maximus (2)

A
  • Most fibers end in iliotibial tract, which inserts into lateral condyle of tibia
  • Some fibers insert on gluteal tuberosity
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3
Q

What is the innervation of Gluteus Maximus

A

Inferior gluteal nerve (L5-S2)

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4
Q

What are the actions of the Gluteus Maximus (4)

A
  • Extends the thigh (especially from flexed position
  • Assists in lateral rotation
  • Steadies thigh
  • Assists in rising from sitting position
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5
Q

What are the PROXIMAL attachments of the Gluteus Medius (1)

A
  • External surface of ilium between anterior and posterior gluteal lines
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6
Q

What are the DISTAL attachments of the Gluteus Medius (1)

A
  • Lateral surface of greater trochanter of femur
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7
Q

What is the innervation of Gluteus Medius

A

Superior gluteal nerve (L5-S1)

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8
Q

What are the actions of the Gluteus Medius (4)

A
  • Abduct the thigh
  • Medially rotate the thigh
  • Keep pelvis level when ipsilateral limb is weight-bearing
  • Advance opposite (unsupported) side during its swing phase
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9
Q

What are the PROXIMAL attachments of the Gluteus Minimus (1)

A
  • External surface of ilium between anterior and inferior gluteal lines
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10
Q

What are the DISTAL attachments of the Gluteus Minimus (1)

A
  • Anterior surface of greater trochanter of femur
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11
Q

What is the innervation of Gluteus Minimus

A

Superior Gluteal nerve (L5-S1)

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12
Q

What are the actions of the Gluteus Minimus (4)

A
  • Abduct the thigh
  • Medially rotate the thigh
  • Keep pelvis level when ipsilateral limb is weight-bearing
  • Advance opposite (unsupported) side during its swing phase
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13
Q

What are the PROXIMAL attachments of the Tensor Fasciae Latae (2)

A
  • Anterior Superior Iliac Spine (ASIS)
  • Anterior part of iliac crest
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14
Q

What are the DISTAL attachments of the Tensor Fasciae Latae (1)

A
  • Iliotibial tract (which attaches to lateral condyle of tibia)
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15
Q

What is the innervation of Tensor Fasciae Latae

A

Superior gluteal nerve (L5-S1)

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16
Q

What are the actions of the Tensor Fasciae Latae (4)

A
  • Abduct the thigh
  • Medially rotate the thigh
  • Keep pelvis level when ipsilateral limb is weight-bearing
  • Advance opposite (unsupported) side during its swing phase
17
Q

What are the PROXIMAL attachments of the Piriformis (2)

A
  • Anterior surface of sacrum
  • Sacrotuberous ligament
18
Q

What are the DISTAL attachments of the Piriformis (1)

A
  • Superior border of greater trochanter of femur
19
Q

What is the innervation of Piriformis

A

Branches of anterior rami of S1, S2

20
Q

What are the actions of the Piriformis (3)

A
  • Laterally rotate extended thigh
  • Abduct flexed thigh
  • Steady femoral head in acetabulum
21
Q

What are the PROXIMAL attachments of the Obturator Internus (2)

A
  • Pelvis surface of obturator membrane
  • Surrounding bones
22
Q

What are the DISTAL attachments of the Obturator Internus (1)

A
  • Medial surface of greater trochanter (trochanteric fossa) of femur
23
Q

What is the innervation of Obturator Internus

A

Nerve to obturator internus (L5-S1)

24
Q

What are the actions of the Obturator Internus (3)

A
  • Laterally rotate extended thigh
  • Abduct flexed thigh
  • Steady femoral head in acetabulum
25
Q

What are the PROXIMAL attachments of the Superior and Inferior Gemelli (2)

A
  • Superior: ischial spine
  • Inferior: Ischial tuberosity
26
Q

What are the DISTAL attachments of the Superior and Inferior Gemelli (1)

A
  • Medial surface of grater trochanter (trochanteric fossa) of femur
27
Q

What is the innervation of Superior and Inferior Gemelli

A
  • Superior gemellus: same nerve supply as obturator internus
  • Inferior gemellus: same nerve supply as quadratus femoris
28
Q

What are the actions of the Superior and Inferior Gemelli (3)

A
  • Laterally rotate extended thigh
  • Abduct flexed thigh
  • Steady femoral head in acetabulum
29
Q

What are the PROXIMAL attachments of the Quadratus Femoris (1)

A
  • Lateral border of ischial tuberosity
30
Q

What are the DISTAL attachments of the Quadratus Femoris (1)

A
  • Quadrate tubercle on intertrochanteric crest of femur and area inferior to it
31
Q

What is the innervation of Quadratus Femoris

A
  • Nerve to quadratus femoris (L5-S1)
32
Q

What are the actions of the Quadratus Femoris (2)

A
  • Laterally rotates thigh
  • Steadies femoral head in acetabulum

Anatomy Lecture Test 1 (6 decks)

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