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Anatomy Block 4 > Gluteal region > Flashcards

Gluteal region Flashcards

1
Q

the greater sciatic foramen is communication between what

A

main pelvic cavity and gluteal region

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2
Q

the lesser sciatic foramen is communication between what

A

gluteal region and perineum

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3
Q

where does the iliotibial tract run from?

A

tubercle of iliac crest to lateral condyle of tibia

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4
Q

what does a + Trrendelenburg’s sign tell you?

A

paralysis of gluteus medius and/or minimus

the pelvis is sink to the unsupported side when walking

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5
Q

how does the piriformis exit the pelvis

A

greater sciatic foramen

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6
Q

what is the only muscle that enters or passes through the lesser sciatic foramen

A

obturator internus muscle

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7
Q

what makes up the sciatic nerve (ie what roots)?

A

ventral rami of L4, L5, S1- S3

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8
Q

what does the sciatic nerve enter the gluteal region through?

A

GREATER sciatic foramen

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9
Q

Origin of gluteus maximus

A

Outer surface of ilium, posterior surface of sacrum + coccyx, sacrotuberous ligament

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10
Q

insertion of gluteus maximus

A

iliotibial tract or gluteal tuberosity of femur

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11
Q

innervation of gluteus maximus

A

inferior gluteal nerve

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12
Q

action of gluteus maximus

A

extension and laterla rotation of thigh at hip
extension of trunk

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13
Q

origin of gluteus minimus

A

outer surface of ilium

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14
Q

insertion of gluteus minimus

A

anterior surface of greater trochanter

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15
Q

action of gluteus minimus

A

abduction + medial rotation of thigh at hip
Helps steady pelvis of supporting limb during walking

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16
Q

innervation of gluteus minimus

A

superior gluteal nerve

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17
Q

origin of gluteus medius

A

outer surface of ilium

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18
Q

insertion of gluteus medius

A

lateral surface of greater trochanter

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19
Q

action of gluteus medius

A

abduction + medial rotation of thigh at hip
Helps steady pelvis of supporting limb during walking

20
Q

innervation of gluteus medius

A

superior gluteal nerve

21
Q

origin of piriformis

A

2nd, 3rd, and 4th sacral vertebrae in the pelvis

22
Q

insertion of piriformis

A

upper border of greater trochanter

23
Q

action of piriformis

A

lateral rotation of thigh at hip

24
Q

innervation of piriformis

A

ventral rami of s1 and s2

25
Q

origin of obturator internus

A

pelvic surface of obturator membrane

26
Q

insertion of obturator internus

A

medial surface of greater trochanter

27
Q

action of obturator internus

A

lateral rotation of thigh at hip

28
Q

innervation of obturator internus

A

nerve to obturator internus

29
Q

origin of superior gemellus

A

ischial spine

30
Q

insertion of the superior gemellus

A

w/ obturator internus into medial surface of greater trochanter

31
Q

action of the superior gemellus

A

lateral rotation of thigh at hip

32
Q

innervation of the superior gemellus

A

nerve to obturator internus

33
Q

origin of the inferior gemellus

A

ischial tuberosity

34
Q

insertion of the inferior gemellus

A

w/ obturator internus into medial surface of greater trochanter

35
Q

action of the inferior gemellus

A

lateral rotation of thigh at hip

36
Q

innervation of the inferior gemellus

A

nerve to quadratus femoris

37
Q

origin of the quadratus femoris

A

lateral border of ischial tuberosity

38
Q

insertion of the quadratus femoris

A

quadrate tubercle

39
Q

action of the quadratus femoris

A

lateral rotation of thigh at hip

40
Q

innervation of the quadratus femoris

A

nerve to quadratus femoris

41
Q

what divisions make up the tibial part of the sciatic nerve

A

anterior divisions of L4-S3 ventral rami

42
Q

what divisions make up the common fibular part of the sciatic nerve

A

posterior divisions of L4-S2 ventral rami

43
Q

what divisions make up the posterior cutaneous nerve of the thigh

A

anterior divisions of S2 and S3 ventral rami

posterior divisions of S1 and S2 ventral rami

44
Q

what are the branches of the posterior cutaneous nerve of the thigh

A

gluteal branches
perineal branches
cutaneous branches

45
Q

All nerves of the gluteal regions pass through greater sciatic foramen except which two also pass through lesser?

A

nerve to obturator internus

pudendal nerve

46
Q

what are the two main arteries of the gluteal region?

A

internal pudendal artery

superior and inferior gluteal

Anatomy Block 4 (14 decks)

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