Glute and Thigh Muscles Flashcards Preview

S1 Anatomy > Glute and Thigh Muscles > Flashcards

Flashcards in Glute and Thigh Muscles Deck (87):
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

gemellus superior, inferior
-insertion

medial surface of greater trochanter
-common tendon with obturator internus

31

gemellus superior, inferior
-actions

same as obturator internus
-laterally rotates extended thigh
abducts flexed thigh
assists in holding head of femur in acetabulum

32

gemellus superior, inferior
-innervation

superior
-nerve to obturator internus (ventral divisions of L5, S1)
inferior
-nerve to quadratus femoris (ventral divisions of L5, S1)

33

quadratus femoris
-origin

lateral border of ischial tuberosity
-inferior to gemellus inferior

34

quadratus femoris
-insertion

on and inferior to quadrate tubercle on intertrochanteric crest

35

quadratus femoris
-actions

laterally rotates thigh
steadies femoral head in acetabulum

36

quadratus femoris
-innervation

nerve to quadratus femoris (ventral divisions of L5, S1)

37

iliopsoas (psoas major, iliacus)
-origin

p. major
-transverse process of lumbar vertebrae, sides of bodies of T12-L5 (including discs)
iliacus
-superior 2/3 of iliac fossa
-ala of sacrum
-anterior sacroiliac ligament

38

iliopsoas (psoas major, iliacus)
-insertion

p. major
-strong tendon into lesser trochanter
iliacus
-tendon of psoas
-lesser trochanter
-shaft of femur inferior to lesser trochanter

39

iliopsoas (psoas major, iliacus)
-actions

with vertebral column fixed (acting superiorly)
-both flex thigh
with thigh fixed (acting inferiorly)
-lateral flexion of vertebral column
acting inferiorly with other side and iliacus
-flexes trunk
balances trunk when sitting

40

iliopsoas (psoas major, iliacus)
-innervation

p. major
-lumbar plexus (ventral rami L1-3(4)
iliacus
-femoral nerve L2-L4

41

sartorius
-origin

ASIS
superior part of notch inferior

42

sartorius
-insertion

superior part of medial surface of tibia

43

sartorius
-actions

thigh
-flexion
-abduction
-lateral rotation
knee
-flexion

44

sartorius
-innervation

femoral nerve L2-L4

45

Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-origin

R. femoris
-AIIS
-groove superior to acetabulum
V. lateralis
-greater trochanter
-lateral lip of linea aspera
V. intermedius
-anterior and lateral surfaces of body of femur
V. medialis
-intertrochanteric line
-medial lip of linea aspera
-spiral lines

46

Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-insertion

base of patella
via patellar ligament to tibial tuberosity

47

Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-actions

extends leg at knee
R. femoris
-steadies hip joint
-helps iliopsoas flex thigh

48

Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-innervation

femoral nerve L2-4

49

pectineus
-origin

pectineal line of the pubis

50

pectineus
-inseriton

pectineal line of femur

51

pectineus
-actions

thigh adduction at hip
thigh flexion at hip

52

pectineus
-innervation

femoral nerve L2-4
may also receive obturator nerve L2-4

53

adductor longus
-origin

body of pubis inferior to pubic crest

54

adductor longus
-insertion

middle 1/3 of linea aspera

55

adductor longus
-actions

adducts thigh

56

adductor longus
-innervation

obturator nerve L2-4

57

adductor brevis
-origin

body and inferior ramus of pubic bone

58

adductor brevis
-insertion

pectineal line of femur
proximal part of linea aspera

59

adductor brevis
-actions

thigh adduction
thigh flexion

60

adductor brevis
-innervation

obturator nerve L2-4

61

adductor magnus
-origin

adductor part
-inferior ramus of pubic bone
-ramus of ischium
hamstring part
-ischial tuberosity

62

adductor magnus
-insertion

adductor part
-gluteal tuberosity
-linea aspera
-medial supracondylar line
hamstring part
-adductor tubercle of femur

63

adductor magnus
-actions

adductor part
-adducts thigh
-flexes thigh
hamstring part
-extends thigh
-adducts thigh

64

adductor magnus
-innervation

adductor part
-obturator nerve L2-L4
hamstring part
-tibial portion of sciatic nerve L4 (L5-S1)

65

gracilis
-origin

body and inferior ramus of pubic bone

66

gracilis
-insertion

superior part of medial surface of tibia

67

gracilis
-actions

thigh adduction
flexes leg
medial rotation of leg

68

gracilis
-innervation

obturator nerve L2-4

69

semitendinosus
-origin

ischial tuberosity

70

semitendinosus
-insertion

medial surface of superior part of tibia

71

semitendinosus
-action

thigh extension
leg flexion
leg medial rotation
when thigh and leg fixes
-can extend trunk

72

semitendinosus
-innervation

tibial division of sciatic nerve L5-S2

73

Semimembranosus
-origin

common origin on ischial tuberosity with semitendinosus and long head of biceps femoris

74

Semimembranosus
-insertion

posterior part of medial condyle of tibia
oblique popliteal ligament

75

Semimembranosus
-actions

same as semitendinosus
-thigh extension
-leg flexion
-leg medial rotation
-can extend truck when thigh and leg fixed

76

Semimembranosus
-innervation

tibial division of sciatic nerve L5-S2

77

biceps femoris (long head, short head)
-origin

long head
-ischial tuberosity
short head
-lateral lip of linea aspera and lateral supracondylar line

78

biceps femoris (long head, short head)
-insertion

lateral side of head of fibula
tendon is split by lateral collateral ligament

79

biceps femoris (long head, short head)
-action

leg flexion
leg lateral rotation
extends thigh at beginning of walking

80

biceps femoris (long head, short head)
-innervation

long head
-tibial division of sciatic nerve L5-S2
short head
-common peroneal division of sciatic nerve L5-S2

81

superior gluteal nerve
-nerve roots
-muscles innervated

roots
-L4, L5, S1 dorsal divisions
muslces
-TFL
-gluteus medius
-gluteus minimus

82

inferior gluteal nerve
-nerve roots
-muscles innervated

roots
-L5, S1, S2 dorsal divisions
muscles
-gluteus maximus

83

femoral nerve
-nerve roots
-muscles innervated

roots
-L2-4 dorsal divisions
muscles
-iliacus
-sartorius
-quadriceps femoris
-pectineus

84

obturator nerve
-nerve roots
-muscles innervated

roots
-L2-4 ventral divisions
muscles
-pectineus (possibly)
-all three adductor muscles (except hamstring part of magnus)
-gracilis

85

tibial division of sciatic nerve
-nerve roots
-muscles innervated

roots
-L5-S2 ventral divisions
muscles
-semi T
-semi M
-biceps femoris long head

86

common peroneal division of sciatic nerve
-nerve roots
-muscles innervated

roots
-L5-S2 dorsal divisions
muscles
-biceps femoris short head

87

which muscles have their own innervation?
what are the innervations?

piriformis
-S1, S2 dorsal divisions
obt. int. and gem. sup.
-L5, S1 ventral divisions (nerve to obt. int.)
quad. fem. and gem. inf.
-L5, S1 ventral divisions (nerve to quad. fem.)
obturator externus
-L3, L4 (obturator nerve)
psoas major
-L1-3(4) ventral rami