Lower Extremity Muscle Actions Flashcards Preview

Muscles > Lower Extremity Muscle Actions > Flashcards

Flashcards in Lower Extremity Muscle Actions Deck (40):
1

Pectineus

Adducts the thigh and flexes the hip joint

2

Adductor Brevis

Adducts and flexes the thigh, and helps to laterally rotates the thigh

3

Adductor Longus

Adducts and flexes the thigh, and helps to laterally rotate the hip joint

4

Adductor Magnus

Powerful thigh adductor, superior horizontal fibers also help flex the thigh, while vertical fibers help extend the thigh

5

Gracilis

Flexes the knee, adducts the thigh, and helps to medially rotate the tibia on the femur

6

Sartorius

Flexes and laterally rotates the hip joint and flexes the knee

7

Tensor Fascia Lata

Helps stabilize and steady the hip and knee joints by putting tension on the iliotibial band of fascia

8

Rectus Femoris

Extends the knee

9

Vastus Intermedius

Extends the Knee

10

Vastus Medialis

Extends the knee

11

Vastus Lateralis

Extends the knee

12

Hamstrings (Biceps Femoris) Long Head

Flexes the knee, and also rotates the tibia laterally, long head also extends the hip joint

13

Hamstrings (Biceps Femoris) Short Head

Flexes the knee, and also rotates the tibia laterally

14

Hamstrings (Semimembranosus)

Extends the thigh, flexes the knee, and also rotates the tibia medially, especially when the knee is flexed

15

Hamstrings (Semitendonosus)

Extends the thigh and flexes the knee, also rotates the tibia medially, especially when the knee is flexed

16

Tibialis Anterior

Dorsiflexor of ankle and invertor of foot

17

Extensor Digitorum Longus

Extend toes 2-5 and dorsiflexes ankle

18

Extensor Hallucis Longus

Extends the great toe and dorsiflexes ankle

19

Gastrocnemius

Power plantar flexor of ankle

20

Soleus

Powerful plantar flexor of ankle

21

Plantaris

Plantar flexor of ankle, also flexes knee

22

Tibialis Posterior

Principal invertor of foot, also adducts foot, plantar flexes ankle, and helps supinate foot

23

Flexor Digitorum Longus

Flexes toes 2-5, also helps in plantar flexion of ankle

24

Flexor Hallucis Longus

Flexes great toe, helps to supinate ankle, and is a very weak plantar flexor of ankle

25

Popliteus

Rotates the knee medially and flexes the leg on the thigh

26

Peroneus Tertius

Works with the extensor digitorum longus to dorsiflex, evert, and abduct the foot

27

Peroneus Brevis

Everts the foot and plantar flexes the ankle

28

Peroneus Longus

Everts foot and plantar flexes ankle, also helps to support the transverse arch of the foot

29

Extensor Digitorum Brevis

Extends digits 2-4

30

Extensor Hallucis Brevis

Extends digit 1

31

Abductor Hallucis

Abducts and flexes digit 1

32

Flexor Digitorum Brevis

Flexes digits 2-5

33

Abductor Digiti Minimi

Abducts and flexes digit 5

34

Quadratus Plantae

Assists flexor digitorum longus in flexing digits 2-5

35

Lumbricals

Flex proximal phalanges, extend middle and distal phalanges of digits 2-5

36

Flexor Hallucis Brevis

Flexes proximal phalanx of digit 1

37

Adductor Hallucis

Adduct digit 1, assist in transverse arch of foot

38

Flexor Digiti Minimi Brevis

Flexes proximal phalanx of 5th digit

39

Plantar Interossei

Adducts digits 2-4

40

Dorsal Interossei

Abducts digits 2-4