Gluteal Region - Muscles

Question 1

ABductors and Medial Rotators of the Thigh

Answer 1

Gluteus medius m Gluteus minimis Tensor fascia lata

Question 2

Small abductors and LATERAL rotators of the thigh

Answer 2

piriformis m superior gemellus m obturator internus m inferior gemellus m quadratus femoris m.

Question 3

Where to the following important nerves derive?

1) N. to Qudrator Femoris
2) Superior Gluteal N.
3) Inferior Gluteal N.
4) Sciatic N.
5) Posterior Cutaneous N. of Thigh
6) Pudendal N.
7) N. to Obturator Internus

Answer 3

1) N. to Qudrator Femoris (L4, L5, S1)
2) Superior Gluteal N. (L4, L5, S1)
3) Inferior Gluteal N. (L5, S1, S2)
4) Sciatic N. (Common: L4-S2) /// Tibial: L4-S3)
5) Posterior Femoral Cutaneous N. (S1-S3)
6) Pudendal N. (S2-S4)
7) N. to Obturator Internus (L5-S1)

Question 4

Gluteus maximus m.

Answer 4

O: posterior gluteal line I: Iliotibial tract & gluteal tuberosity A: Extend / laterally rotate thigh BS: Superficial branch of superior gluteal A & inferior gluteal A N: Inferior gluteal n.

Question 5

Gluteus medius m.

Answer 5

O: along the Iliac blade / gluteal surface of illium I: Greater trochanter of femur A: Abduct and medially rotate thigh N: Superior gluteal n. BS: Deep branch of superior gluteal A

Question 6

Gluteus minimis m

Answer 6

O: gluteal surface of illium I: Greater trochanter of femur A: Abduct and medially rotate thigh N: Superior gluteal n. BS: Deep branch of the superior gluteal A

Question 7

Tensor Fascia Lata M.

Answer 7

O: ASIS I: IT Band & Lateral tibial condyle via the IT Band A: Abducting, medially rotate and flex thigh maintain leg extension N: Superior gluteal N BS: Deep branch of Superficial gluteal A.

Question 8

Piriformis M.

Answer 8

O: Anterior surface of sacrum

I: Greater trochanter

A: Abduct flexed thigh, laterally rotate extended thigh

N: N. to Piriformis

BS: Inferior Gluteal A.

MOVES THROUGH GREATER SCIATIC FORAMEN

Question 9

Superior Gemellus M.

Answer 9

O: Ischial Spine

I: Greater Trochanter

A: Abduct flexed thigh, laterally rotate extended thigh

N: N. to Obturator Internus

BS: Inferior gluteal A.

Question 10

Obturator Internus M.

Answer 10

O: Obturator membrane

I: Greater trochanter

A: Abduct flexed thigh and laterally rotate extended thigh

N: N. to Obturator Internus M. (L5, S1)

BS: Inferior Gluteal A

Question 11

Inferior Gemellus M.

Answer 11

O: Ischial Tuberosity

I: Greater Trochanter

A: Abduct flexed thigh, laterally rotate extended thigh

N: N. to Quadrator Femoris M. (L5, S1)

BS: Inferior gluteal a

Question 12

Quadratus Femoris M.

Answer 12

O: Ischial Tuberosity

I: Quadrate Tubercle on Femur

A: Laterally rotate thigh

N: N. to Quadrator Femoris

BS: Medial Circumflex A.

Obturator Externus M is deep to Quadratus Femoris M.