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S1 Anatomy > Glute and Thigh Muscles > Flashcards

Glute and Thigh Muscles Flashcards

1
Q

tensor fascia latae

-origin

A

anterior part of iliac crest
iliac tubercle
ASIS
deep surface of fascia lata

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2
Q

tensor fascia latae

-insertion

A

iliobitial tract of fascia lata

-attaches to lateral condyle of tibia

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3
Q

tensor fascia latae

-actions

A 
thigh
-flexion
-medial rotation (internal)
-abduction
tenses fascia lata
may assist in knee extension
steadies trunk on thigh
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4
Q

tensor fascia latae

-innervation

A

superior gluteal nerve

-dorsal divisional of L4, L5, S1

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5
Q

gluteus maximus

-origin

A 
external surface
-ala of ilium - posterior to posterior gluteal line
-iliac crest
dorsal surface of sacrum
coccyx
sacrotuberous ligament
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6
Q

gluteus maximus

-insertion

A 
iliotibial tract (which inserts in lateral condyle of tibia)
gluteal tuberosity of femur
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7
Q

gluteus maximus

-actions

A 
thigh
-extension (more in forced movements such as climbing and running)
lateral rotation
steadies thigh flexion (during sitting)
extends pelvis when thigh fixed
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8
Q

gluteus maximus

-innervation

A

inferior gluteal nerve

-dorsal divisions of L5, S1, S2

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9
Q

gluteus medius

-origin

A

external surface of ilium

-between anterior and posterior gluteal lines

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10
Q

gluteus medius

-insertion

A

lateral surface of greater trochanter of femur

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11
Q

gluteus medius

-actions

A

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

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12
Q

gluteus medius

-innervation

A

superior gluteal nerve

-dorsal divisions of L4, L5, S1

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13
Q

gluteus minimus

-origin

A

external surface of ilium

-between anterior and inferior gluteal lines

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14
Q

gluteus minimus

-insertion

A

anterior surface of greater trochanter of femur

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15
Q

gluteus minimus

-actions

A

abduction of thigh
medial rotation of thigh
steadies pelvis (same as G. medius)

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16
Q

gluteus minimus

-innervation

A

superior gluteal nerve

-dorsal divisions of L4, L5, S1

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17
Q

piriformis

-origin

A

anterior surface of sacrum (within the pelvis)
superior margin of greater sciatic notch
sacrotuberous ligament

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18
Q

piriformis

-insertion

A

superior border of the greater trochanter

-leaves pelvis minor through greater sciatic foramen

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19
Q

piriformis

-actions

A

rotates thigh (extended) laterally
abducts (flexed) thigh
assist in holding the head of the femur in the acetabulum

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20
Q

piriformis

-innervation

A

dorsal division branches of ventral rami of S1 and S2

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21
Q

obturator internus

-origin

A

pelvic surfaces of ilium and ischium

internal surface of obturator membrane

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22
Q

obturator internus

-insertion

A

medial surface of greater trochanter of femur

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23
Q

obturator internus

-actions

A

laterally rotates extended thigh
abducts flexed thigh
assists in holding head of femur in acetabulum

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24
Q

obturator internus

-innnervation

A

nerve to obturator internus (ventral divisions of L5, S1

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25
Q

obturator externus

-origin

A

rami of pubis and ischium

external surface of obturator membrane

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26
Q

obturator externus

-insertion

A

trochanteric fossa of femur

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27
Q

obturator externus

-actions

A

laterally rotates extended thigh

steadies head of femur in acetabulum

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28
Q

obturator externus

-innervation

A

obturator nerve (L3, L4)

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29
Q

gemellus superior, inferior

-origin

A

superior
-ischial spine
inferior
-ischial tuberosity

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30
Q

gemellus superior, inferior

-insertion

A

medial surface of greater trochanter

-common tendon with obturator internus

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31
Q

gemellus superior, inferior

-actions

A

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

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32
Q

gemellus superior, inferior

-innervation

A

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

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33
Q

quadratus femoris

-origin

A

lateral border of ischial tuberosity

-inferior to gemellus inferior

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34
Q

quadratus femoris

-insertion

A

on and inferior to quadrate tubercle on intertrochanteric crest

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35
Q

quadratus femoris

-actions

A

laterally rotates thigh

steadies femoral head in acetabulum

36
Q

quadratus femoris

-innervation

A

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

37
Q

iliopsoas (psoas major, iliacus)

-origin

A

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
Q

iliopsoas (psoas major, iliacus)

-insertion

A

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

39
Q

iliopsoas (psoas major, iliacus)

-actions

A

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
Q

iliopsoas (psoas major, iliacus)

-innervation

A

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

41
Q

sartorius

-origin

A

ASIS

superior part of notch inferior

42
Q

sartorius

-insertion

A

superior part of medial surface of tibia

43
Q

sartorius

-actions

A 
thigh
-flexion
-abduction
-lateral rotation
knee
-flexion
44
Q

sartorius

-innervation

A

femoral nerve L2-L4

45
Q 
Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-origin
A 
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
Q 
Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-insertion
A

base of patella

via patellar ligament to tibial tuberosity

47
Q 
Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-actions
A

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

48
Q 
Quadriceps femoris (rectus femoris; vastus lateralis, intermedius & medialis)
-innervation
A

femoral nerve L2-4

49
Q

pectineus

-origin

A

pectineal line of the pubis

50
Q

pectineus

-inseriton

A

pectineal line of femur

51
Q

pectineus

-actions

A

thigh adduction at hip

thigh flexion at hip

52
Q

pectineus

-innervation

A

femoral nerve L2-4

may also receive obturator nerve L2-4

53
Q

adductor longus

-origin

A

body of pubis inferior to pubic crest

54
Q

adductor longus

-insertion

A

middle 1/3 of linea aspera

55
Q

adductor longus

-actions

A

adducts thigh

56
Q

adductor longus

-innervation

A

obturator nerve L2-4

57
Q

adductor brevis

-origin

A

body and inferior ramus of pubic bone

58
Q

adductor brevis

-insertion

A

pectineal line of femur

proximal part of linea aspera

59
Q

adductor brevis

-actions

A

thigh adduction

thigh flexion

60
Q

adductor brevis

-innervation

A

obturator nerve L2-4

61
Q

adductor magnus

-origin

A 
adductor part
-inferior ramus of pubic bone
-ramus of ischium
hamstring part
-ischial tuberosity
62
Q

adductor magnus

-insertion

A 
adductor part
-gluteal tuberosity
-linea aspera
-medial supracondylar line
hamstring part
-adductor tubercle of femur
63
Q

adductor magnus

-actions

A 
adductor part
-adducts thigh
-flexes thigh
hamstring part
-extends thigh
-adducts thigh
64
Q

adductor magnus

-innervation

A

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

65
Q

gracilis

-origin

A

body and inferior ramus of pubic bone

66
Q

gracilis

-insertion

A

superior part of medial surface of tibia

67
Q

gracilis

-actions

A

thigh adduction
flexes leg
medial rotation of leg

68
Q

gracilis

-innervation

A

obturator nerve L2-4

69
Q

semitendinosus

-origin

A

ischial tuberosity

70
Q

semitendinosus

-insertion

A

medial surface of superior part of tibia

71
Q

semitendinosus

-action

A 
thigh extension
leg flexion
leg medial rotation
when thigh and leg fixes
-can extend trunk
72
Q

semitendinosus

-innervation

A

tibial division of sciatic nerve L5-S2

73
Q

Semimembranosus

-origin

A

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

74
Q

Semimembranosus

-insertion

A

posterior part of medial condyle of tibia

oblique popliteal ligament

75
Q

Semimembranosus

-actions

A

same as semitendinosus

  • thigh extension
  • leg flexion
  • leg medial rotation
  • can extend truck when thigh and leg fixed
76
Q

Semimembranosus

-innervation

A

tibial division of sciatic nerve L5-S2

77
Q 
biceps femoris (long head, short head)
-origin
A

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

78
Q 
biceps femoris (long head, short head)
-insertion
A

lateral side of head of fibula

tendon is split by lateral collateral ligament

79
Q 
biceps femoris (long head, short head)
-action
A

leg flexion
leg lateral rotation
extends thigh at beginning of walking

80
Q 
biceps femoris (long head, short head)
-innervation
A

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

81
Q

superior gluteal nerve

  • nerve roots
  • muscles innervated
A 
roots
-L4, L5, S1 dorsal divisions
muslces
-TFL
-gluteus medius
-gluteus minimus
82
Q

inferior gluteal nerve

  • nerve roots
  • muscles innervated
A

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

83
Q

femoral nerve

  • nerve roots
  • muscles innervated
A 
roots
-L2-4 dorsal divisions
muscles
-iliacus
-sartorius
-quadriceps femoris
-pectineus
84
Q

obturator nerve

  • nerve roots
  • muscles innervated
A 
roots
-L2-4 ventral divisions
muscles
-pectineus (possibly)
-all three adductor muscles (except hamstring part of magnus)
-gracilis
85
Q

tibial division of sciatic nerve

  • nerve roots
  • muscles innervated
A 
roots
-L5-S2 ventral divisions
muscles
-semi T
-semi M
-biceps femoris long head
86
Q

common peroneal division of sciatic nerve

  • nerve roots
  • muscles innervated
A

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

87
Q

which muscles have their own innervation?

what are the innervations?

A 
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

S1 Anatomy (31 decks)

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