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Gross Anatomy > Gluteal Region > Flashcards

Gluteal Region Flashcards

1
Q

What passes through the greater sciatic foramen?

A
  • piriformis m.
  • superior gluteal n.a.v.
  • inferior gluteal n.a.v.
  • pudendal n.
  • posterior femoral cutaneous n.
  • sciatic n.
  • n. to obturator internus and quadratus femoris
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2
Q

What passes through the lesser sciatic foramen?

A
  • obturator internus t.
  • n. to obturator internus
  • internal pudendal a.v.
  • pudedal n.
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3
Q

T/F Extension winds spiraling ll. tightly?

A

True

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4
Q

T/F Flexion unwinds spiraling ll.?

A

False

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5
Q

Hip extension is limited to?

A

10-20% beyond vertical

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6
Q

What are the superficial gluteal muscles?

A
  • gluteus maxims m.
  • gluteus medius m.
  • gluteus minimus m.
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7
Q

Gluteus Maximus

A

O: Ilium posterior to posterior gluteal line; dorsum of sacrum and coccyx; sacrotuberous l.
I: IT band (tract) and gluteal tuberosity
A: extension of thing from a flexed position; assist with LR
N: Inferior gluteal n. (L5, S1, S2)
B: Superior and inferior gluteal aa.

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8
Q

Paralysis of gluteus max would affect what?

A

-climbing NOT walking on level ground

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9
Q

Gluteus Medius

A

O: Ilium between anterior and posterior gluteal lines
I: lateral surface greater trochanter of femur
A: ABD and MR of thing; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase
N: Superior gluteal n. (L5, S1)
B: Superior gluteal a.

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10
Q

Gluteus minimus

A

O: ilium between anterior and inferior gluteal lines
I: anterior surface greater trochanter of femur
A: ABD and MR of thigh; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase N: Superior gluteal n. (L5, S1)
B: Superior gluteal a.

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11
Q

Tesnor Fascia Lata

A 
O: ASIS; anterior part of iliac crest
I: IT band 
A: flexion of thigh, ABD, MR; helps keep knee extended (tenses IT band)
N: superior gluteal n. (L5, S1)
B: Superior gluteal a.
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12
Q

Piriformis m.

A

O: anterior surface of sacrum; sacrotuberous l.
I: superior border greater trochanter of femur
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: Ventral rami S1, S2
B: superior and inferior gluteal aa.

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13
Q

Superior gemellus

A

O: ischial spine
I: trochanteric fossa of femur via t. of obturator interns
A: LR of extended thigh: ABD of flexed thigh ; steadies femoral head
N: Nerve to obturator internus (L5, S1)
B: inferior gluteal and medial femoral circumflex aa.

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14
Q

Obturator Internus

A

O: pelvic surface of obturator membrane and surrounding bones
I: torchanteric fossa of femur
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: n. to obturator internus (L5, S1)
B: pelvic part - obturator a.
extrapelvic part - medial femoral circumflex a.

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15
Q

Inferior Gemellus

A

O: ischial tuberosity
I: torchanteric fossa via tendon of obturator internus
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: nerve to quadratus femoris (L5, S1)
B: medial femoral circumflex a.

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16
Q

Obturator Externus

A

O: margins of obturator foramen and obturator membrane
I: trochanteric fossa of femur
A: LR of thigh; steadies femoral head
N: posterior division obturator n. (L3, L4)

17
Q

Quadratus Femoris

A

O: lateral border of ischial tuberosity
I: Quadrate tubercle of femur and area inferior to it
A: LR of thigh; steadies femoral head
N: N. to quadratus femoris (L5, S1)
B: medial femoral circumflex and 1st perforating aa.

18
Q

VPR of superior gluteal n. and what does it supply?

A

L4-S1, supplies gluteus medius, minims and tensor fascia lata mm.

19
Q

VPR of Inferior gluteal n. and what does it supply?

A

L5-S2, supplies gluteus maximus m.

20
Q

VPR of Sciatic n. and what does it supply?

A

L4-S3, doesn’t supply anything in the gluteal region

21
Q

VPR of n. to quadrates femurs and what does it supply?

A

L4-S1, supplies quadratus femurs and inferior gemellus mm.

22
Q

VPR of n. to obturator interns and what does it supply?

A

L5-S2, supplies obturator interns and superior gemellus mm.

23
Q

VPR of pudendal n. and what does it supply?

A

S2-4, doesn’t supply anything in the gluteal region

24
Q

VPR of clunial nn. and what does it supply?

A

Superior: DPR of L1-3, supplies skin of superior buttock
Middle: DPR of S1-3, supplies skin over sacrum and adjacent buttock
Inferior from posterior cutaneous n. of thigh, supplies skin over inferior half of buttock

Gross Anatomy (15 decks)

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