Flashcards in Glute and Thigh Muscles Deck (87)
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1
tensor fascia latae
-origin
anterior part of iliac crest
iliac tubercle
ASIS
deep surface of fascia lata
2
tensor fascia latae
-insertion
iliobitial tract of fascia lata
-attaches to lateral condyle of tibia
3
tensor fascia latae
-actions
thigh
-flexion
-medial rotation (internal)
-abduction
tenses fascia lata
may assist in knee extension
steadies trunk on thigh
4
tensor fascia latae
-innervation
superior gluteal nerve
-dorsal divisional of L4, L5, S1
5
gluteus maximus
-origin
external surface
-ala of ilium - posterior to posterior gluteal line
-iliac crest
dorsal surface of sacrum
coccyx
sacrotuberous ligament
6
gluteus maximus
-insertion
iliotibial tract (which inserts in lateral condyle of tibia)
gluteal tuberosity of femur
7
gluteus maximus
-actions
thigh
-extension (more in forced movements such as climbing and running)
lateral rotation
steadies thigh flexion (during sitting)
extends pelvis when thigh fixed
8
gluteus maximus
-innervation
inferior gluteal nerve
-dorsal divisions of L5, S1, S2
9
gluteus medius
-origin
external surface of ilium
-between anterior and posterior gluteal lines
10
gluteus medius
-insertion
lateral surface of greater trochanter of femur
11
gluteus medius
-actions
abduction of thigh
medial rotation of thigh (anterior fibers)
lateral rotation of thigh (posterior fibers)
steadies pelvis (tilts) to same side during locomotion, allowing opposite side foot to clear ground
-fixing of femur and abduction tilts the pelvis
12
gluteus medius
-innervation
superior gluteal nerve
-dorsal divisions of L4, L5, S1
13
gluteus minimus
-origin
external surface of ilium
-between anterior and inferior gluteal lines
14
gluteus minimus
-insertion
anterior surface of greater trochanter of femur
15
gluteus minimus
-actions
abduction of thigh
medial rotation of thigh
steadies pelvis (same as G. medius)
16
gluteus minimus
-innervation
superior gluteal nerve
-dorsal divisions of L4, L5, S1
17
piriformis
-origin
anterior surface of sacrum (within the pelvis)
superior margin of greater sciatic notch
sacrotuberous ligament
18
piriformis
-insertion
superior border of the greater trochanter
-leaves pelvis minor through greater sciatic foramen
19
piriformis
-actions
rotates thigh (extended) laterally
abducts (flexed) thigh
assist in holding the head of the femur in the acetabulum
20
piriformis
-innervation
dorsal division branches of ventral rami of S1 and S2
21
obturator internus
-origin
pelvic surfaces of ilium and ischium
internal surface of obturator membrane
22
obturator internus
-insertion
medial surface of greater trochanter of femur
23
obturator internus
-actions
laterally rotates extended thigh
abducts flexed thigh
assists in holding head of femur in acetabulum
24
obturator internus
-innnervation
nerve to obturator internus (ventral divisions of L5, S1
25
obturator externus
-origin
rami of pubis and ischium
external surface of obturator membrane
26
obturator externus
-insertion
trochanteric fossa of femur
27
obturator externus
-actions
laterally rotates extended thigh
steadies head of femur in acetabulum
28
obturator externus
-innervation
obturator nerve (L3, L4)
29
gemellus superior, inferior
-origin
superior
-ischial spine
inferior
-ischial tuberosity
30
