Muscles of the Lower Extremity: Gluteal Region Flashcards Preview

Gross Anatomy Muscle Attachments > Muscles of the Lower Extremity: Gluteal Region > Flashcards

Flashcards in Muscles of the Lower Extremity: Gluteal Region Deck (36)
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1
Q

Gluteus Maximus Proximal Attachment

A

External surface of the ilium behind the posterior gluteal line, posterior sacrum, coccyx, and sacrotuberous ligament

2
Q

Gluteus Maximus Distal Attachment

A

Gluteal tuberosity and IT tract

3
Q

Gluteus Maximus Innervation

A

Inferior gluteal n. [L5,S1,S2]

4
Q

Gluteus Maximus Action

A
All fibers:
Extend the hip
Laterally rotate the hip
Upper fibers:
Abduct the hip
Lower fibers:
Adduct the hip
5
Q

Gluteus Medius Proximal Attachment

A

External surface of the ilium between the anterior and posterior gluteal lines

6
Q

Gluteus Medius Distal Attachment

A

Greater trochanter

7
Q

Gluteus Medius Innervation

A

Superior gluteal n. [*L5,S1]

8
Q

Gluteus Medius Action

A
All fibers:
Abduct the hip
Anterior fibers:
Flex the hip
Medially rotate the hip
Posterior fibers:
Extend the hip
Laterally rotate the hip
9
Q

Gluteus Minimus Proximal Attachment

A

External surface of ilium between the anterior and inferior gluteal lines

10
Q

Gluteus Minimus Distal Attachment

A

Anterior border of the greater trochanter

11
Q

Gluteus Minimus Innervation

A

Superior gluteal n. [*L5,S1]

12
Q

Gluteus Minimus Action

A

Abducts the hip

Medially rotates the hip

13
Q

Tensor Fascia Lata Proximal Attachment

A

Anterior iliac crest and ASIS

14
Q

Tensor Fascia Lata Distal Attachment

A

Illiotibial tract

15
Q

Tensor Fascia Lata Innervation

A

Superior gluteal n. [*L5,S1]

16
Q

Tensor Fascia Lata Action

A
Flexes the hip
Medially rotates the hip
Abducts the hip
Assists with:
-Knee extension
-Tibia lateral rotation when the knee is flexed
17
Q

Piriformis Proximal Attachment

A

Anterior surface of the sacrum

18
Q

Piriformis Distal Attachment

A

Medial surface of the greater trochanter of the femur

19
Q

Piriformis Innervation

A

Nerve to piriformis [*S1,S2]

20
Q

Piriformis Action

A

Laterally rotates the hip
Assists with:
Hip abduction when the hip is flexed

21
Q

Obturator Internus Proximal Attachment

A

Medial (Internal) surface of the obturator membrane and surrounding bone

22
Q

Obturator Internus Distal Attachment

A

Medial surface of the greater trochanter of the femut

23
Q

Obturator Internus Innervation

A

Nerve to obturator internus [L5,*S1]

24
Q

Obturator Internus Action

A

Laterally rotates the hip
Assists with:
-Hip abduction when the hip is flexed

25
Q

Superior Gemellus Proximal Attachment

A

Ischial spine

26
Q

Superior Gemellus Distal Attachment

A

Greater trochanter of the femur (with obturator internus)

27
Q

Superior Gemellus Innervation

A

Nerve to obturator internus [L5,*S1]

28
Q

Superior Gemellus Action

A

Laterally rotates the hip
Assists with:
-Hip abduction when the hip is flexed

29
Q

Inferior Gemellus Proximal Attachment

A

Ischial tuberosity

30
Q

Inferior Gemellus Distal Attachment

A

Greater trochanter of the femur (with obturator internus)

31
Q

Inferior Gemellus Innervation

A

Nerve to quadratus femoris [L5, S1]

32
Q

Inferior Gemellus Action

A

Laterally rotates the hip
Assists with:
-Hip abduction when the hip is flexed

33
Q

Quadratus Femoris Proximal Attachment

A

Ischial Tuberosity

34
Q

Quadratus Femoris Distal Attachment

A

Quadrate tubercle of the femur

35
Q

Quadratus Femoris Innervation

A

Nerve to quadratus femoris [L5, S1]

36
Q

Quadratus Femoris Action

A

Laterally rotates the hip
Assists with:
-Hip abduction when the hip is flexed