test 4 posterior leg Flashcards Preview

Gross Anatomy > test 4 posterior leg > Flashcards

Flashcards in test 4 posterior leg Deck (34):
1

superficial posterior leg muscles

-Gastrocnemius
-Soleus
-Plantaris

2

Gastrocnemius: Lateral head (LG) origin

Lateral aspect of lateral condyle of femur

3

Gastrocnemius: Lateral head (LG) insertion

Posterior surface of calcaneus via calcaneal tendon

4

Gastrocnemius: Lateral head (LG) innervation

Tibial nerve (S1, S2)

5

Gastrocnemius: Lateral head (LG) action

Plantarflexes ankle when knee is extended; raises heel during walking, and flexes leg at knee joint

6

Gastrocnemius: Medial head (MG) origin

popliteal surface of femur, superior to medial condyle

7

Gastrocnemius: Medial head (MG) insertion

Posterior surface of calcaneus via calcaneal tendon

8

Gastrocnemius: Medial head (MG) innervation

Tibial nerve (S1, S2)

9

Gastrocnemius: Medial head (MG) action

Plantarflexes ankle when knee is extended; raises heel during walking, and flexes leg at knee joint

10

Soleus (SOL) origin

Posterior aspect of head of fibula, superior quarter of posterior surface of fibula, soleal line, and medial border of tibia

11

Soleus (SOL) insertion

Posterior surface of calcaneus via calcaneal tendon

12

Soleus (SOL) innervation

Tibial nerve (S1, S2)

13

Soleus (SOL) action

Plantarflexes ankle; steadies leg on foot

14

Plantaris (P) origin

Inferior end of lateral supracondylar line of femur and oblique popliteal ligament

15

Plantaris (P) insertion

Posterior surface of calcaneus via calcaneal tendon

16

Plantaris (P) innervation

Tibial nerve (S1, S2)

17

Plantaris (P) action

Plantarflexes ankle; steadies leg on foot

18

Deeep posterior leg muscles

-Popliteus
-Flexor Hallucis Longus
-Flexor Digitorum Longus
-Tibialis Posterior

19

Popliteus origin

Lateral surface of lateral condyle of femur and lateral meniscus

20

Popliteus insertion

Posterior surface of tibia, superior to soleal line

21

Popliteus innervatio

Tibial nerve (L4, L5, S1)

22

Popliteus action

Weakly flexes knee and unlocks it by laterally rotating femur on fixed tibia, or medially rotating tibia of unplanted limb

23

Flexor hallucis longus (FHL) origin

Inferior two thirds of posterior surface of fibula and inferior part of interosseous membrane

24

Flexor hallucis longus (FHL) insertion

Base of distal phalanx of great toe (hallux)

25

Flexor hallucis longus (FHL) innervation

Tibial nerve (S2, S3)

26

Flexor hallucis longus (FHL) action

Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot

27

Flexor digitorum longus (FDL) origin

Medial part of posterior surface of tibia inferior to soleal line and by a broad tendon to fibula

28

Flexor digitorum longus (FDL) insertion

Bases of distal phalanges of lateral four digits

29

Flexor digitorum longus (FDL) innervation

Tibial nerve (S2, S3)

30

Flexor digitorum longus (FDL) action

Flexes lateral four digits; plantarflexes ankle; supports longitudinal arches of foot

31

Tibialis posterior (TP) origin

Interosseous membrane, posterior surface of tibia inferior to soleal line, and posterior surface of fibula

32

Tibialis posterior (TP) insertion

Primarily to tuberosity of navicular; also to cuneiforms, cuboid and bases of 2nd–4th metatarsals

33

Tibialis posterior (TP) innervation

Tibial nerve (L4, L5)

34

Tibialis posterior (TP) action

Plantarflexes ankle; inverts foot; supports medial longitudinal arch of foot