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Flashcards in Leg muscle attachments Deck (58)
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1

What are the 3 compartments of the leg? (3)

1. posterior
2. lateral
3. anterior

2

What can the muscles in the posterior compartment in the leg be split into? (2)

1. superficial group
2. deep group

3

What are the muscles of the superficial group in the posterior compartment of the leg? (3)

1. gastrocnemius
2. plantaris
3. soleus

4

What is the origin of gastrocnemius? (medial and lateral head)

medial

1. posterior surface of distal femur just superior to medial condyle

lateral

1. upper posterolateral surface lateral femoral condyle

5

What is the insertion of gastrocneumius?

- via calcaneal tendon

- to posterior surface of calcaneus

6

What is the innervation of gastrocnemius?

tibial nerve

7

What is the function of gastrocnemius?

plantar flexes foot

flexes the knee

8

What is the origin of plantaris?

inferior part of lateral supracondylar line of femur

oblique popliteal ligament of knee

9

What is the insertion of popliteus?

via calcaneal tendon

to posterior surface of calcaneus

10

What is the innervation of popliteus?

tibial nerve

11

What is the function of popliteus?

plantar flexes foot

flexes knee

12

What is the origin to soleus? (6)

1. soleal line

2. medial border of tibia

3. posterior aspect of fibular head

4. adjacent surfaces of fibular neck

5. proximal shaft of fibula

6. tendinous arch between tibial and fibular attachments

13

What is the insertion of soleus?

via calcaneal tendon

posterior surface of calcaneus

14

what is the innervation of soleus?

tibial nerve

15

What is the function of soleus?

plantar flexes the foot

16

What are the muscles in the deep group of the posterior compartment of the leg? (4)

1. popliteus
2. flexor hallucis longus
3. flexor digitorum longus
4. tibialis posterior

17

What is the origin of popliteus?

lateral femoral condyle

18

What is the insertion of popliteus?

posterior surface of proximal tibia

19

What is the innervation of popliteus?

tibial nerve

20

What is the function of popliteus? (2)

1. stabalises knee joint - resists lateral rotation of tibia on femur
2. unlocks knee joint - laterally rotates femur on fixed tibia

21

What is the origin of flexor hallucis longus? (2)

1. posterior surface of fibula
2. adjacent interosseous membrane

22

What is the insertion of flexor hallucis longus?

plantar surface of distal phalanx of great toe

23

What is the innervation to flexor hallucis longus?

tibial nerve

24

What is the function of flexor hallucis longus?

flexes great toe

25

What is the origin of flexor digitorum longus?

medial side of posterior surface of the tibia

26

What is the insertion of flexor digitorum longus?

plantar surfaces of bases of distal phalanxes of the lateral 4 toes

27

What is the innervation to flexor digitorum longus?

tibial nerve

28

What is the function of flexor digitorum longus?

flexes lateral 4 toes

29

What is the origin of tibialis posterior? (2)

1. posterior surfaces of inetrosseous membrane

2. adjacent regions of tibia and fibula

30

What is the insertion of tibialis posterior? (2)

1. mainly tuberosity of navicular

2. adjacent region of medial cuneiform