The Leg & Ankle Region II Flashcards Preview

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Flashcards in The Leg & Ankle Region II Deck (20):
1

posterior compartment of the leg:

superficial muscles (3)

deep muscles (4)

gastrocnemius
plantaris
soleus

popliteus
flexor digitorum longus
flexor hallucis longus
tibialis posterior

2

posterior compartment of the leg:

blood supply (1)

nerve(s)

group action(s)

posterior tibial artery

tibial nerve

plantar flexion

3

posterior compartment of the leg:
superficial muscles:
gastrocnemius muscle:

nerve(s)

action(s)

tibial nerve

plantar flexes foot at ankle joint
flexes leg at knee joint

4

posterior compartment of the leg:
superficial muscles:
soleus:

nerve(s)

action(s)

tibial nerve

plantar flexes foot

5

posterior compartment of the leg:
supreficial muscles:
gastrocnemius bellies & soleus:

___

action(s)

tricepsp surae

main plantar flexor of the foot

6

posterior compartment of the leg:
superficial muscles:
plantaris:

nerve(s)

action(s)

tibial nerve

assists w/ plantar flexion of foot
assists w/ flexion of leg at knee joint

7

posterior compartment of the leg:
deep muscles:
popliteus:

nerve(s)

action(s)

tibial nerve

medial rotation of tibia if leg is free
lateral rotation of femur if foot is on ground

8

posterior compartment of the leg:
deep muscles:
flexor digitorum longus:

nerve(s)

action(s)

tibial nerve

flexes toes
plantar flexes the foot

9

posterior compartment of the leg:
deep muscles:
flexor hallucis longus:

nerve(s)

action(s)

tibial nerve

flexes great toe
plantar flexes foot

10

posterior compartment of the leg:
deep muscles:
tibialis posterior:

nerve(s)

action(s)

tibial nerve

inverts & plantar flexes foot

11

posterior compartment of the leg:
tibial nerve:

passes downward from ___ fossa b/n two heads of ___ muscle, then deep to ___ muscle

courses straight down the leg on the (medial/lateral) side of the ___ artery

passes behind the ___ onto the ___ surface of the foot dividing into the ___ & ___ nerves

popliteal fossa
gastrocnemius
soleus

lateral
posterior tibial artery

medial malleolus
plantar surface
medial & lateral plantar nerves

12

posterior compartment of the leg:
popliteal artery:

accompanies the ___ nerve deep to the ___ & ___ muscles

gives off the ___ & ___ arteries

terminates by dividing into the ___ & ___ arteries at the lower border of the ___ muscle

tibial nerve
gastrocnemius & soleus muscles

genicular & sural arteries

anterior & posterior tibial arteries
popliteus muscles

13

posterior compartment of the leg:
posterior tibial artery:

(smallest/largest) of two terminal branches

runs downward w/ the ___ nerve

passes posterior to the ___

divides into ___ & ___ arteries which accompany the ___ nerves

largest

tibial nerve

medial malleolus

medial & lateral plantar arteries
corresponding nerves

14

posterior compartment of the leg:
posterior tibial artery:
major branches (2)

nutrient artery of the tibia
fibular artery

15

posterior compartment of the leg:
posterior tibial artery:
major branches:

nutrient artery of the tibia: largest ___ artery in the body

fibular artery: (smallest/largest) branch of the posterior tibial artery
- descends b/n the ___ & ___
- main blood supply for the ___ & ___ muscles

nutrient

largest
- tibialis posterior & flexor hallucis longus
- flexor hallucis longus & lateral compartment

16

ankle region:

common site of ___ & ___

important to know arrangement of ___, ___, & ___

fractures
sprains

tendons
nerves
vessels

17

posterior aspect of ankle:
behind medial malleolus (deep to flexor retinaculum, medial to lateral) (5)

tibialis posterior
flexor digitorum longus
posterior tibial artery
tibial nerve
flexor hallucis longus

18

posterior aspect of ankle:
behind lateral malleolus:

deep to fibular retinacula (2)

superficial to fibular retinacula (2)

fibularis longus
fibularis brevis

sural nerve
small saphenous vein

19

anterior aspect of ankle:
deep to extensor retinacula (medial to lateral) (6)

tibialis anterior
extensor hallucis longus
anterior tibial artery
deep fibular nerve
extensor digitorum longus
fibularis tertius

20

anterior aspect of ankle:
superficial to extensor retinacula (2)

saphenous nerve & great saphenous vein (immediately anterior to medial malleolus)

superficial fibular nerve

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