Flashcards in Leg muscle attachments Deck (58)
Loading flashcards...
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
