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Flashcards in Compartments of Leg Deck (36):
1

The interosseus membrane contains two aperatures. What are they called, what do they convey, and where are they?

Aperature for anterior tibial vessels (carries anterior tibial vessels and is at superior end of interosseus membrane). Aperature for perforating branch of fibular artery (carries vessel of that name, is at inferior end of interosseus membrane)

2

Two branches of the popliteal artery

Anterior tibial and posterior tibial

3

Where does the posterior tibial artery run?

Between the superficial and deep muscles

4

Where do muscles in the lateral compartment of the leg get blood from?

Perforating branches off the fibular artery

5

What does the anterior tibial artery feed?

The anterior compartment of the leg

6

Where does the anterior tibial artery descend through the leg?

On the anterior surface of the interosseus membrane

7

What descends through the leg with the anterior tibial artery and where do they descend?

The deep fibular nerve. They descend on the anterior surface of the interosseus membrane

8

Where does the anterior tibial artery cross the ankle and what is it called after this point?

Midway between lateral and medial malleoulus. It becomes the dorsalis pedis artery at this point

9

What does the posterior tibial artery supply?

Posterior and lateral compartments of the leg, and the foot

10

The tarsal tunnel runs directly behind what structure?

The medial malleolus

11

What supplies the muscles of the posterior compartment of the leg?

The tibial nerve

12

What does the tibial nerve supply and what nerve is this a branch of?

Supplies all muscles in posterior compartment of leg, is a branch of sciatic nerve

13

What structures does the common fibular nerve supply?

Muscles of the anterior and lateral compartments of leg

14

What supplies the muscles of the anterior and lateral compartments of the leg?

The common fibular nerve

15

What are the superficial muscles supplied by the tibial nerve?

Gastrocnemius, plantaris, soleus

16

What innervates the muscles of the anterior compartment of the leg?

Deep fibular nerve (from the common fibular nerve)

17

What are the muscles of the anterior compartment of the leg?

Tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius

18

What are the muscles of the lateral compartment of the leg?

Fibularus longus, fibularis brevis

19

What innervates the muscles of the lateral compartment of the leg?

Superficial fibular nerve (from common fibular nerve)

20

What are the branches of the common fibular nerve?

Deep fibular nerve, superficial fibular nerve

21

What is turning the ankle inward called?

Inversion

22

What is turning the ankle outward called?

Eversion

23

What do muscles of the anterior compartment of the leg do?

Dorsiflexors of the foot and toes

24

What do muscles of the lateral compartment of the leg do?

Elevators of the foot (e.g. eversion)

25

What do muscles of the posterior compartment of the leg do?

Plantar flexors of foot and toes

26

The fibularis longus helps support what structure?

The lateral arch of the foot

27

What injury might cause a muscle of the lateral leg to come off its attachment site, and which muscle?

Inversion ankle sprains can cause fibularis brevis to come off its attachment site (tubercle of 5th metatarsal)

28

Where is fibularis brevis relative to fibularis longus?

Anterior

29

Where does the superior fibular retinaculum run from and to?

Lateral malleolus to calcaneus

30

Activities involving lateral leg muscles

Ankle eversion, ankle stabilization

31

Activities involving anterior leg muscles

Ankle dorsiflexion, walking, resisted movement

32

What type of injury is a shin splint?

Strain of tibialis anterior

33

Where are the popliteal vessels (including nerve) relative to the popliteus muscle?

Posterior to the muscle

34

Order of the structures of the deep posterior leg from medial to lateral

Flexor digitorum longus, tibialis posterior, flexor hallucis longus

35

What are the types of muscle contractions and briefly describe each in terms of the barbell example

Concentric (lift a barbell), eccenteric (slowly lower a barbell), isometric (hold a barbell steady)

36

Two phases of gait

Stance phase (reference foot on ground, 60 percent of time), swing phase (reference foot off ground, 40 percent of time)

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