Leg & Popliteal Region Flashcards Preview

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Flashcards in Leg & Popliteal Region Deck (36):
1

What innervates the extensor digitorum longus?

Deep fibular nerve

2

What is the main action of the extensor digitorum longus?

Extends lateral 4 digits and dorsiflexes foot at ankle

3

What innervates the extensor hallucis longus?

Deep fibular nerve

4

What is the main action of the extensor hallucis longus?

Extends great toe, dorsiflexes foot at ankle

5

What innervates the fibularis peroneus brevis?

Superficial fibular nerve

6

What is the main action of the fibularis peroneus brevis?

Extends foot and weakly plantarflexes foot at ankle

7

What innervates the fibularis peroneus longus?

Superficial fibular nerve

8

What is the main action of the fibularis peroneus longus?

Extends foot and weakly plantarflexes foot at ankle

9

What innervates the fibularis peroneus tertius?

Deep fibular nerve

10

What is the main action of the fibularis peroneus tertius?

Dorsiflexes foot at ankle and aids in eversion of foot

11

What innervates the flexor digitorum longus?

Tibial nerve

12

What is the main action of the flexor digitorum longus?

Flexes lateral four digits and plantarflexes foot at ankle Supports longitudinal arches of foot

13

What innervates the flexor hallucis longus?

Tibial nerve

14

What is the main action of the flexor hallucis Longus?

Flexes all joints of great toe
Weakly plantarflexes foot at ankle

15

What innervates the gastrocnemius?

Tibial nerve

16

What are the main actions of the gastrocnemius?

Plantarflexes foot at ankle joint
Assists in flexion of knee joint
Raises heel during walking

17

What innervates the plantaris?

Tibial Nerve

18

What is the main action of the plantaris?

Weakly assists gastrocnemius

19

What innervates the popliteus?

Tibial nerve (L4-S1)

20

What is the main action of the popliteus?

Weakly flexes knee and unlocks it by rotating femur on fixed tibia

21

What innervates the soleus muscle?

Tibial nerve

22

What is the main action of the soleus muscle?

Plantarflexes foot at ankle and stabilizes leg over foot

23

What innervates the tibialis anterior?

Deep fibular nerve

24

What is the main action of the tibialis anterior?

Dorsiflexes foot at ankle and inverts foot

25

What innervates the tibialis posterior?

Tibial nerve

26

What is the main action of the tibialis posterior?

Plantarflexes foot at ankle and inverts foot

27

Origin of tibialis anterior?

Lateral condyle of tibia and interosseous membrane

28

Insertion of tibialis anterior?

Medial cuneiform and 1st metatarsal

29

Origin of Extensor digitorum longus?

Lateral condyle of tibia,interosseous
membrane, and fibula

30

Insertion of Extensor digitorum longus?

Phalanges of lateral four digits

31

Origin of Extensor hallucis longus?

Fibula and interosseous membrane

32

Insertion of Extensor hallucis longus?

Distal phalanx of great toe

33

Describe the route of the popliteal artery.

The popliteal artery descends down the posterior thigh, giving off genicular branches that supply the knee joint.

At the lower border of the popliteus, the popliteal artery terminates by dividing into anterior and posterior tibial arteries.

The anterior tibial - dorsalis pedis artery in the foot
The posterior tibial - fibular artery

34

Which muscles evert and which invert?

· Eversion muscles:
pEroneus longus
pEroneus brevis
pEroneus terius
· Inversion muscles:
tIbialis anterior
tIbialis posterior

35

Anterior compartment of leg contents at the ankle from medial malleolus


The Hamptons Are Never Dull Parties

Tibialis anterior tendon
(extensor) Hallucis longus
Artery (anterior tibial)
Nerve (deep peroneal)
(extensor) Digitorum
Peroneus tertius

36

Popliteal fossa contents medial to lateral

Serve And Volley Next Ball
Semimembranosus/Semitendinosus
Artery
Vein
Nerve
Biceps femoris