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Gross Anatomy II NYCC > Gluteal Region > Flashcards

Gluteal Region Flashcards

1
Q

What forms the gluteal sulcus or crease?

A

Free border of gluteus maximus

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2
Q

What nerves supply the skin of the gluteal region?

A

Cluneal n. (Superior, middle, inferior)

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3
Q

What nerve innervates the skin of the medial glute region?

A

Middle cluneal n (lat cutaneous branches of d rami S1-S3)

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4
Q

What nerve innervates the inferior aspect of the glute region?

A

Inferior cluneal nn (branches of v rami S1-S3)

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5
Q

What nerve innervates the middle-superior aspect of the gluteal region?

A

Superior cluneal nn (lateral cutaneous branches of d rami L1-L4)

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6
Q

Superior gluteal vessels are located deep to the ____ muscle, and superficial to the _____ muscle

A

Gluteus medius
Gluteus minimus

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7
Q

Inferior gluteal vessels are located inferior to ____

A

Piriformis

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8
Q

Origin & insertion of gluteus maximus

A

O: outer surface of ilium and iliac crest; dorsal surface of sacrum; lateral aspect of coccyx & sacrotuberous ligament

I: iliotibial tract & gluteal tuberosity of femur

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9
Q

Innervation of gluteus maximus

A

Inferior gluteal n

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10
Q

Action of gluteus maximus

A

Extension & lateral rotation of thigh

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11
Q

Origin & insertion of gluteus medius

A

O: between anterior & posterior gluteal lines
I: lateral aspect of greater trochanter of femur

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12
Q

Innervation of gluteus medius

A

Superior gluteal n

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13
Q

Origin & insertion of gluteus minimus

A

O: between anterior & inferior gluteal lines
I: anterior aspect of greater trochanter & joint capsule of hips

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14
Q

Innervation of gluteus minimus

A

Superior gluteal n

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15
Q

Action of gluteus minimus & medius

A

Abduction & medial rotation

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16
Q

What is Trendelenburg sign?

A

Failure of Gluteus minimus & medius to pull the iliac blade toward their insertion at the greater trochanter, causing the opposite hip to drop during gait

17
Q

if the left hip drops (lurch) while walking, name the side, nerve and muscles that may be paralyzed

A
  • Lurch on left side = problem on right side
  • Superior gluteal n
  • gluteus medius & minimus
18
Q

Origin & insertion of tensor fascia lata

A

O: ASIS & anterior iliac crest
I: iliotibial tract/band

19
Q

Innervation of tensor fascia lata

A

Superior gluteal n

20
Q

Action of tensor fascia lata

A
  • Tenses the iliotibial tract, thereby stabilizing the thigh on the leg
  • thigh abduction
21
Q

Origin & insertion of piriformis

A

O: ventrolateral aspect of sacrum
I: greater trochanter

22
Q

Innervation of piriformis

A

Nerve to piriformis

23
Q

Origin & insertion of superior gemellus

A

O: outer surface of ischial spine
I: medial surface of greater trochanter

24
Q

Innervation of superior gemellus

A

Nerve to obturator internus

25
Q

Origin & insertion of obturator internus

A

O: inner surface of obturator membrane & obturator foramen
I: medial surface of greater trochanter

26
Q

Innervation of obturator internus

A

Nerve to obturator internus

27
Q

Origin & insertion of inferior gemellus

A

O: ischial tuberosity
I: medial surface of greater trochanter

28
Q

Innervation of inferior gemellus

A

Nerve to quadratus femoris

29
Q

Action of superior gemellus, obturator internus, inferior gemellus, and piriformis

A
  • Laterally rotate extended thigh
  • abduct flexed thigh
    (Stabilization of hip joint)
30
Q

Origin & insertion of quadratus femoris

A

O: lateral border of ischial tuberosity
I: quadrate tubercle & intertrochanteric crest

31
Q

Innervation of quadratus femoris

A

Nerve to quadratus femoris

32
Q

Action of quadratus femoris

A

Lateral rotation
(Stabilization of hip joint)

33
Q

what are the PIN structures?

A

Pudendal n
Internal pudendal a + v
N to obturator internus

Gross Anatomy II NYCC (18 decks)

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