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Flashcards in Thigh muscles attachments Deck (68):
1

What are 3 compartments that make up the thigh muscles?

1. anterior
2. medial
3. posterior

2

What are the muscles in the anterior compartment of the thigh? (7)

1. psoas major
2. iliacus
3. vastus medialis
4. vastus intermedius
5. vastus lateralis
6. rectus femoris
7. sartorius

3

What is the origin of psoas major?

1. posterior abdominal wall - lumbar transverse processes

2. adjacent bodies from TXII to LV

3. tendinous arches between TXII to LV

4

What is the insertion of psoas major?

lesser trochanter of the femur

5

What is the innervation of psoas major?

anterior rami (L1, L2, L3)

6

What is the function of psoas major?

Flexes thigh at the hip joint

7

What is the origin of iliacus?

posterior abdominal wall - iliac fossa

8

What is the insertion of iliacus?

lesser trochanter of femur

9

What is the innervation of iliacus?

femoral nerve

10

What is the function of iliacus?

flexes the thigh at hip joint

11

What is the origin of vastus medialis? (4)

femur

1. medial part of the intertrochanteric line
2. pectineal line
3. medial lip of linea aspera
4. medial supracondylar line

12

What is the insertion of vastus medialis? (2)

1. quadriceps femoris tendon
2. medial border of patella

13

What is the innervation of vastus medialis?

femoral nerve

14

What is the function of vastus medialis?

extends the leg at the knee joint

15

What is the origin of vastus intermedius?

femur

1. upper 2/3rds of anterior and lateral surfaces

16

What are the insertions for vastus intermedius? (3)

1. quadriceps femoris tendon
2. lateral margin of patella
3. lateral condyle of tibia

17

What is the innervation of vastus intermedius?

femoral nerve

18

What is the function of vastus intermedius?

extends the leg at the knee joint

19

What is the origin of vastus lateralis? (4)

femur

1. lateral part of intertrochanteric line
2. margin of greater trochanter
3. lateral margin of gluteal tuberosity
4. lateral lip of the linea aspera

20

What are the insertion of vastus lateralis? (2)

1. quadriceps femoris tendon
2. lateral margin of patella

21

What is the innervation to vastus lateralis?

femoral nerve

22

What is the function of vastus lateralis?

extends the leg at knee joint

23

What is the origin of rectus femoris?

1. straight head originates from the AIIS
2. reflected head originates from the ilium just superior to the acetabulum

24

What is the insertion for rectus femoris?

quadriceps femoris tendon

25

What is the innervation for rectus femoris?

femoral nerve

26

What is the function of rectus femoris? (2)

1. flexes the thigh at hip joint
2. extends the leg at the knee joint

27

What is the origin for sartorius?

ASIS

28

What is the insertion for sartorius?

medial surface of tibia - just inferomedial to the tibial tuberosity

29

What is the innervation to sartorius?

femoral nerve

30

What is the function for sartorius?

1. flexed the thigh at the hip joint
2. flexes the leg at knee joint

31

What muscles are involved in the medial compartment of the thigh? (6)

1. gracilis
2. pectineus
3. adductor longus
4. adductor brevis
5. adductor magnus
6. obturator externus

32

What is the origin of gracilis muscle? (3)

1. a line on the external surfaces of the body of the pubis

2. the inferior pubic rams

3. ramus of the ischium

33

What is the insertion of gracilis?

medial surface of proximal shaft of tibia

34

What is the innervation of gracilis?

obturator nerve

35

What is the function of gracilis? (2)

1. adducts thigh at hip joint
2. flexes leg at knee joint

36

What is the origin of pectineus muscle? (2)

1. pectineal line (pecten pubis)

2. adjacent bone of pelvis

37

What is the insertion of pectineus?

- oblique line extending from the base of the lesser trochanter to linea aspera
- on posterior surface of proximal femur

38

What is the innervation of pectineus?

femoral nerve

39

What is the function of pectineus?

adducts and flexes thigh at hip joint

40

What is the origin of adductor longus?

1. external surface of body of pubis

- triangular depression inferior to pubic crest and lateral to pubic symphysis

41

What is the insertion of adductor longus?

linea aspera

- on middle 1/3 of shaft of femur

42

What is the innervation of adductor longus?

Obturator nerve

43

What is the function of adductor longus?

1. adducts thigh at hip joint
2. medially rotates thigh at hip joint

44

What is the origin for adductor brevis?

1. external surface of body of pubis

2. external surface of inferior pubic ramus

45

What is the insertion for adductor brevis?

1. posterior surface of proximal femur

2. upper 1/3 of linea aspera

46

What is the innervation of adductor brevis?

obturator nerve

47

What is the function of adductor brevis?

1. adducts thigh at hip joint
2. medially rotates thigh at hip joint

48

What is the origin of adductor magnus?

1. adductor part - ischiopubic ramus

2. hamstring part - ischial tuberosity

49

What is the insertion of adductor magnus?

Adductor part

1. posterior surface of proximal femur
2. linea aspera
3. medial supracondylar line

Hamstring part

1. adductor tubercle
2. supra condylar line

50

What is the innervation of adductor magnus?

Adductor

obturator nerve

Hamstring

sciatic nerve - tibial nerve

51

What is the function of adductor magnus

1. adducts the thigh at hip joint

2. medially rotates thigh at hip joint

52

What is the origin of obturator externus?

1. external surface of obturator membrane

2. external surface of adjacent bone

53

What is the insertion of obturator externus?

trochanteric fossa

54

What is the innervation of obturator externus?

obturator nerve

55

What is the function of obturator externus?

laterally rotates thigh at hip joint

56

What muscles make up the posterior compartment of the thigh?

1. biceps femoris
2. semitendinosus
3. semimembranosus

57

What is the origin of biceps femoris? (2)

long head

1. inferomedial part of the upper area of the ischial tuberosity

Short head

2. lateral lip of linea aspera

58

What is the insertion of biceps femoris?

1. head of fibula

59

What is the innervation of biceps femoris?

sciatic nerve

60

What is the function of biceps femoris? (4)

1. flexes leg at knee joint
2. extends thigh at hip joint
3. laterally rotates leg at knee joint
4. laterally rotates thigh at hip joint

61

What is the origin of semitendinosus?

inferomedial part of the upper area of the ischial tuberosity

62

What is the insertion of semitendinosus?

medial surface of proximal tibia

63

What innervation of semitendinosus?

sciatic nerve

64

What is the function of semitendinosus? (4)

1. flexes leg at knee joint
2. extends thigh at hip joint
3. medially rotates thigh at hip joint
4. medially rotates leg at knee joint

65

What is the origin of semimembranosus?

superolateral impression on the ischial tuberosity

66

What is the insertion of semimembranosus?

1. groove and adjacent bone on medial and posterior surface of medial tibial condyle

67

What is the innervation of semimembranosus?

sciatic nerve

68

What is function of semimembranosus? (4)

1. flexes leg at knee joint

2. extends thigh at hip joint

3. medially rotates thigh at hip joint

4. medially rotates leg at knee joint