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Anatomy > LOWER LIMB MUSCLES: GLUTEAL REGION > Flashcards

LOWER LIMB MUSCLES: GLUTEAL REGION Flashcards

1
Q

Which nerves innervate the gluteus maximus?

A

inferior gluteal nerve

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2
Q

Which blood vessels supply blood to the gluteus maximus?

A

inferior and superior gluteal artery
(branches of the internal iliac artery)

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3
Q

Where is the origin of the gluteus maximus?

A

posterior gluteal line, dorsal sacroilial ligament, dorsal surface of sacrum and sacotuberous ligament

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4
Q

Where is the insertion of the gluteus maximus?

A

gluteal tuberosity of femur and iliotibial tract

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5
Q

What is the function of the gluteus maximus?

A

extends and laterally rotates thigh at hip joint; through
iliotibial tract it extends knee joint

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6
Q

Which nerves innervate the gluteus medius?

A

superior gluteal nerve

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7
Q

Which blood vessels supply blood to the gluteus medius?

A

superior gluteal artery

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8
Q

Where is the origin of the gluteus medius?

A

lateral surface of ilium from iliac crest and posterior gluteal line superior to anterior gluteal line

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9
Q

Where is the insertion of the gluteus medius?

A

lateral surface of greater trochanter

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10
Q

What is the function of the gluteus medius?

A

abducts thigh and helps in medial rotation of thigh

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11
Q

Which nerve innervates the gluteus medius?

A

superior gluteal nerve

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12
Q

Which blood vessels supply the gluteus medius?

A

superior gluteal artery

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13
Q

Where is the origin of the gluteus medius?

A

lateral surface of ilium between anterior and inferior gluteal lines

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14
Q

Where is the insertion of the gluteus medius?

A

anterior border of greater trochanter

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15
Q

What is the function of the gluteus medius?

A

abducts thigh and helps in medial rotation

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16
Q

Which nerves innervates the inferior gamellus?

A

nerve to quadratus femoris
and gamellus inferior

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17
Q

Which blood vessels supply the inferior gamellus?

A

inferior gluteal artery

18
Q

Where is the origin of the inferior gamellus?

A

superior border of ischial tuberosity

19
Q

Where is the insertion of the inferior gamellus?

A

tendon of obturator internus then via this tendon to the surface of the greater trochanter

20
Q

What is the function of the inferior gamellus?

A

lateral rotation of the thigh

21
Q

Which nerves innervate the obturator internus?

A

sacral plexus (nerve to obturator internus and superior gamellus)

22
Q

Which blood vessels supply the obturator internus?

A

internal pudendal and superior
gluteal artery

23
Q

Where is the origin of the obturator internus?

A

margin of pelvic surface of obturator foramen and membrane

24
Q

Where is the insertion of obturator internus?

A

medial surface of greater trochanter

25
Q

What is the function of the obturator internus?

A

lateral rotator of thigh, abducts thigh when limb is flexed

26
Q

Which nerves innervate the piriformis?

A

1st and 2nd sacral nerve
(nerve to piriformis)

27
Q

Which blood vessels supply the piriformis?

A

internal pudendal artery and superior and inferior gluteal artery

28
Q

Where is the origin of the piriformis?

A

anterior surface of sacrum and margin of greater sciatic foramen and sacrotuberous ligament

29
Q

Where is the insertion of the piriformis?

A

superior border of greater trochanter

30
Q

What is the function of the piriformis?

A

abducts and laterally rotates thigh

31
Q

Which nerves innervate the quadratus femoris?

A

nerve to quadratus femoris and gamellus inferior

32
Q

Which blood vessels supply the quadratus femoris?

A

medial femoral circumflex artery

33
Q

Where is the origin of the quadratus femoris?

A

lateral margin of ischial tuberosity

34
Q

Where is the insertion of the quadratus femoris?

A

posterior surface of femur on a line between greater and lesser trochanter i.e. intertrochanteric line

35
Q

What is the function of the quadratus femoris?

A

external rotation of the thigh and adduction of the thigh

36
Q

Which nerves innervate the superior gemellus?

A

sacral plexus (nerve to obturator internus and superior gemellus)

37
Q

Which blood vessels supply the superior gemellus?

A

inferior gluteal artery

38
Q

Where is the origin insertion of the superior gemellus?

A

outer surface of ischial spine and edge of lesser sciatic notch

39
Q

Where is the insertion of the superior gemellus?

A

tendon of obturator internus then via this tendon to the surface of the greater trochanter

40
Q

What is the function of the superior gemellus?

A

lateral rotation of the thigh

Anatomy (13 decks)

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