Manual 62- 68: Muscles of Thigh Flashcards Preview

Anatomy Lower Limb > Manual 62- 68: Muscles of Thigh > Flashcards

Flashcards in Manual 62- 68: Muscles of Thigh Deck (92):
1

the subcutaneous fascia of thigh is continuous with ...

subcutaneous fascia of entire anterior abdominal wall, gluteal region, leg

2

the subcutaneous fascia is divided into what two layers

-superficial (fatty)
-deep (membranosus)
- superficial vessels and nerves,inguinal lymph nodes, great saphenous v found between layers

3

fascia distal to inguinal ligament along upper medial area of the ghigh

fascia lata

4

what fills the saphenous opening/fossa ovalis

fascia cribosa

5

external layer of investing fascia of thigh

fascia lata

6

the fascia lata is ____ medially and ____ laterally

- thin
- thick

7

attachments of fascia lata

- ischial tuberosity
- ischiopubic ramus
- external perineal fascia

8

the fascia lata is continuous with what distally? proximally?

distal = investing fascia of leg
proximally = thoracolumbar, external abdominal fascia

9

where does the anterior part of fascia lata attach?

- pubic tubercle
- anterior superior iliac spine
- inguinal ligament

10

what is the thickened opening in fascia lata called

saphenous opening/ fossa ovalis
- allows for passage of great saphenous v

11

free lateral margin of saphenous opening

falciform margin
- the lateral part is very thick and buttressed by glut max and tensor fasciae latae tendons

12

superior attachment of fascia lata

- crest of ilium
- dorsal sacrum

13

thickened tendon within fascia lata on lateral thigh

iliotibial band

14

found between 2 layers of fascia lata laterally

tensor fasciae latae

15

what divides the thigh into 3 myofascial compartments

lateral and medial intermuscular septa

16

longest m in body

sartorius
- descends lateral toomedial across thigh

17

what forms the roof of adductor canal and lateral border of femoral triangle

sartorius

18

origin of sartorius

- ASIS and inferior notch (below spine)

19

insertion of sartorius

- pes anserinus (proximal part of medial surface of body of tibia)

20

course of sartorius

obliquely lateral to medial across upper thigh, then descend nearly vertically to its insetion

21

n supply to sartorius

femoral n.

22

functions of sartorius

- flex hip
- abduct hip
- lateral rotation of hip
- flex knee
- medial rotation leg (from flexed position)

"sitting crossed-legged"

23

common insertion of quadriceps femoris

tibial tuberosity via patellar ligament

24

primary function quadriceps femoris

extension of knee
* rectus femoris also assists in hip flexion

25

n supply to quadriceps femoris

femoral n

26

origin of rectus femoris

- two tendons: straight and reflected
- straight/anterior: AIIS
- refleced/posterior: groove above acetabulum
- tendons merge and form broad aponeurosis on ventral surface of m
- fibers of m arise from the aponeurosis

27

insertion of rectus femoris

- base (superior) of patella - through thick aponeurotic tendon to patellar ligament to tibial tuberosity

28

largest of four quadriceps muscles

vastus lateralis

29

origin of vastus lateralis

- lateral lip linea aspera
- lateral lip gluteal tuberosity
- anterior and ifnerior borders of greater trochanter
- proximal intertrochanteric line

30

insertion of vastus lateralis

- lateral border of patella
- tendon of quadriceps femoris

31

origin of vastus medialis

- distal intertrochanteric line
- medial intermuscular septum
- tendons of adductor longus and magnus
- proximal medial supracondylar line
- medial lip of linea aspera

32

insertion of vastus medialis

- medial border of patella
- tendon of quadriceps femoris

33

origin of vastus intermedius

- proximal 2/3 anterior surface of femur
- proximal 2/3 lateral surface of femur

34

insertion of vastus intermedius

- quadriceps tendon

35

small m located deep to vastus intermedius

articularis genu

36

origin of articularis genu

anterior surface, distal femur

37

insertion of articularis genu

synovial membrane of knee joint

38

n supply to articularis genu

femoral n

39

function of articularis genu

draw synovium proximally

40

variations in anterior thigh muscles

- sartorius m : may be absent or split into two parts; may have accessory sites of origin on inguinal ligament, notch of ilium, iliopectineal line or pubis
- articularis genu: may be blended with vastus intermedius

41

what are the muscles of the medial compartment of thigh

- gracilis
- pectineus
- adductor magnus
- adductor longus
- adductor brevis

42

origin of gracilis

- pubic symphysis - inferior 1/2
- pubic body
- pubic arch (inferior pubic ramus) - superior 1/2

43

insertion of gracilis

pes anserinus (proximal, medial surface tibia)

44

n supply to gracilis

anterior division of obturator n

45

functions of gracilis

- flex knee
- adduct hip
- medial rotation of hip

46

origin of pectineus

- pectin pubis
- bone anterior to pectin pubis (b/w pubic tubercle and iliopectineal eminence)

47

insertion of pectineus

pectineal line (b/w lesser trochanter and linea aspera)

48

n supply to pectineus

femoral n and accessory obturator if present
(obturator n may also provide a branch)

49

functions of pectineus

- flex hip
- adduction hip
- medial rotation hip

50

most anterior adductor m

adductor longus

51

origin adductor longus

pubic body (anterior)

52

insertion adductor longus

medial lip of linea aspera (b/w attachments of vastus medialis and adductor magnus)

53

functions adductor longus

flex hip
adduction hip

54

n supply adductor longus

anterior branch of obturator n

55

m just posterior to adductor longus

adductor brevis

56

what n surrounds the adductor brevis

anterior and posterior divisions of the obturator

57

origin of adductor brevis

- pubic body
- inferior pubic ramus (b/w gracilis and obturator externus)

58

insertion of adductor brevis

linea aspera (proximal part)

59

n supply to adductor brevis

obturator n. (anterior division)

60

function of adductor brevis

flex hip
adduction hip

61

largest of adductors

adductor magnus

62

located deep to the adductor brevis

adductor magnus

63

describe the orientation of fibers in adductor magnus

- upper fibers are nearly horizontal
- lower fibers are nearly vertical

64

what are the 5 openings in the adductor magnus for?

- 4 for the passage of perforating branches of deep femoral a
- adductor hiatus - most distal, largest opening

65

what passes through the adductor hiatus?

femoral vessels to popliteal fossa

66

adductor hiatus aka

hiatus tendineus

67

origin of adductor magnus

- inferior pubic ramus
- ramus of ischium
- ischial tuberosity (triangular region)

68

insertion of adductor magnus

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

69

n supply to adductor magnus

- posterior division: obturator n
- anterior division: sciatic n

70

functions of adductor magnus

- flex hip
- adduct hip
- extend hip
(all are possible because of orientation of fibers- some say rotation of hip also possible)

71

variations in medial compartment of thigh

- pectineus may have two strata. if it does the dorsal stratum is innervated by femoral n or accessory obturator n and the ventral stratum is innervated by obturator n
- doubled adductor longus m may be fused with pectineus or insertion descend as far as knee
- adductor longus - 2 or 3 parts fused with adductor magnus
- adductor magnus - fused with quadratus femoris or with other adductor muscles

72

what are the muscles of the posterior compartment of thigh

- hamstrings (biceps femoris, semitendinosus, semimenranosus)

73

lateral hamstring muscle

biceps femoris

74

medial hamstring muscles

semitendinosus and semimembranosus

75

origin biceps femoris

long head: posterior part of ischial tuberosity below the oblique line and common tendon with semitendinosus and sacrotuberous ligament

short head: lateral lip of linea aspera (b/w adductor magnus and vastus lateralis m) and lateral supracondyalr line of femur and lateral intermuscular septum

76

insertion of biceps femoris long head

- lateral side of styloid process (fibula)
- head of fibula
- lateral condyle of tibia

77

describe the course of the long head of biceps femoris

passes obliquely/laterally across sciatic n

78

the tendon of long head of biceps femoris surrounds what ligament

fibular collateral ligament

79

what n follows the medial border of long head of biceps femoris

common fibular n

80

insertion of short head of biceps femoris

overlying aponeurosis

81

n supply to long head of biceps femoris

tibial portion of sciatic n

82

n supply to short head of biceps femoris

common fibular portion of sciatic n

83

functions of biceps femoris

- flex knee
- rotation, laterally (from flexed position)
- longhead: extension at hip, rotation, laterally at hip

84

origin of semitendinosus

- posterior ischial tuberosity below oblique line with substantial aponeurosis connecting it two biceps femoris (about 8 cm from origin)

85

insertion of semitendinosus

- long tendon (begins mid thigh): lies medial border of popiteal fossa, curves around medial condyle of tibia, over tibial collateral ligament
- pes anserinus

86

n supply to semitendinosus

tibial portion of sciatic n

87

functions of semitendinosus

- flex knee
- medial rotation of knee (from full flexion)
- extend hip

88

origin of semimebranosus

- oblique line of ischial tuberosity (above semitendinosus and biceps femoris)
- aponeurotic expansion

89

insertion of semimembranosus

- medial condyle (tibia) - groove medial surface
- lateral condyle (femur) - posterior surface
- fascia - covering popiteal m
- fibers proceed suprolaterlaly and form oblique popliteal ligament

90

n supply to semimembranosus

tibial portion of sciatic n

91

functions of semimembranosus

- flex knee
- medial rotation of knee (from full flexion)
- extend hip

92

variations in muscles of posterior compartment of thigh

- short head of biceps femoris (absent or accessory heads (arising form ischial tuberosity, linea aspera, or medial supracondylar ridge of femur)
- biceps femoris - extension may attach to gastrocnemius m
- semimembranosus - absent or double