Lecture 8 - Muscles of Leg and Ankle

Question 1

anterior carpartment of leg - muscles (4)

Answer 1

1. tibialis anterior
2. extensor hallicus longus
3. extensor digitorum longus
4. peroneus tertius

Question 2

anterior carpartment of leg - action

Answer 2

dorsifelxion

Question 3

anterior carpartment of leg - tibialis anterior: origin

Answer 3

upper 2/3 of the lateral surface of the tibia and interosseous membrane

Question 4

anterior carpartment of leg - tibialis anterior: insertionmedial

Answer 4

medial cuneifrom and base of 1st metatarsal

Question 5

anterior carpartment of leg - tibialis anterior: actions (2)

Answer 5

dorsiflexion and inversion

Question 6

anterior carpartment of leg - extensor hallicus longus: origin

Answer 6

middle 1/3 of the medial surface of the fibula and interosseous membrane

Question 7

anterior carpartment of leg - extensor hallicus longus: insertion

Answer 7

base of distal phalanx of the hallux

Question 8

anterior carpartment of leg - extensor hallicus longus: actions (2)

Answer 8

dorsiflexion and extension of hallus

Question 9

anterior carpartment of leg - extensor digitorum longus: origins (3)

Answer 9

lateral tibial condyle, head and medial surface of fibula, and interosseous membrane

Question 10

anterior carpartment of leg - extensor digitorum longus: insertion

Answer 10

base of distal phalanx of digits 2-5

Question 11

anterior carpartment of leg - extensor digitorum longus: actions (2)

Answer 11

dorsiflexion and extension of digits 2-5

Question 12

anterior carpartment of leg - peroneus tertius: origin

Answer 12

anterior border fo distal fibula

Question 13

anterior carpartment of leg - peroneus tertius:

Answer 13

base of the 5th metatarsal

Question 14

anterior carpartment of leg - peroneus tertius: actions (2)

Answer 14

dorsiflexion and eversion

Question 15

what is the extensor retinaculum?

Answer 15

the band of connective tissue covering the extensor tendons on the anterior surface of the leg and ankle

Question 16

what muscles are in the lateral compartment of the leg? (2)

Answer 16

1. peroneus longus
2. peroneus brevis

Question 17

what action does the lateral compartment of the leg mainly do?

Answer 17

eversion

Question 18

lateral compartment of leg - peroneus longus: origin

Answer 18

head and proximal 2/3 of lateral surface of fibula

Question 19

lateral compartment of leg - peroneus longus: insertion

Answer 19

medial cuneiform and base of 1st metatarsal

Question 20

lateral compartment of leg - peroneus longus: actions (2)

Answer 20

plantarflexion and eversion

Question 21

lateral compartment of leg - peroneus brevis: origin

Answer 21

distal 1/2 of lateral surface of fibula

Question 22

lateral compartment of leg - peroneus brevis: insertion

Answer 22

base of the 5th metatarsal

Question 23

lateral compartment of leg - peroneus brevis: actions (2)

Answer 23

plantarflexion and eversion

Question 24

what muscles comprimise the posterior compartment (superficial) of the leg? (3)

Answer 24

1. gastrocnemius and soleus = triceps surae
2. plantaris

Question 25

what action does the posterior compartment (superficial) of the leg mainly do?

Answer 25

plantarflexion

Question 26

posterior compartment (superficial) - gastrocnemis: origin

Answer 26

medial and lateral epicondyle of the femur

Question 27

posterior compartment (superficial) - gastrocnemis: insertion

Answer 27

calcaneal tuberosity via calcaneal tendon

Question 28

posterior compartment (superficial) - gastrocnemis: actions (2)

Answer 28

knee flexion and plantarflexion

Question 29

posterior compartment (superficial) - soleus: origins (2)

Answer 29

posterior surfa e of fibular head and neck, and soleal line of tibia

Question 30

posterior compartment (superficial) - soleus: insertion

Answer 30

calcaneal tuberosity via calcaneal tendon

Question 31

posterior compartment (superficial) - soleus: action

Answer 31

plantarflexion

Question 32

posterior compartment (superficial) - plantaris: origin

Answer 32

lateral epicondyle of the femur

Question 33

posterior compartment (superficial) - plantaris: insertion

Answer 33

calcaneal tuberosity via calcaneal tendon

Question 34

posterior compartment (superficial) - plantaris: actions (2)

Answer 34

knee flexion and plantarflexion

Question 35

what muscles comprimise the posterior compartment (deep) of the leg? (4)

Answer 35

1. popliteus 2. tibialis posterior 3. flexor digitorum longus 4. flexor hallicus longus

Question 36

what action does the posterior compartment (deep) of the leg mainly do? (2)

Answer 36

plantarflexion and inversion

Question 37

posterior compartment (deep) of the leg - popliteus: origin

Answer 37

lateral femoral condyle and lateral meniscus

Question 38

posterior compartment (deep) of the leg - popliteus: insertion

Answer 38

posterior tibial surface

Question 39

posterior compartment (deep) of the leg - popliteus: actions (2)

Answer 39

"unlocks" and stabilizes knee joint

Question 40

posterior compartment (deep) of the leg - tibialis posterior: origin

Answer 40

interosseur membrane and borders of tibia and fibula

Question 41

posterior compartment (deep) of the leg - tibialis posterior: insertions (3)

Answer 41

navicular, cuneiforms, and basse of 2-4th metatarsals

Question 42

posterior compartment (deep) of the leg - tibialis posterior: actions (2)

Answer 42

plantarflexion and inversion

Question 43

posterior compartment (deep) of the leg - flexor digitorum longus: origin

Answer 43

middle 1/3 of posterior surface of tibial

Question 44

posterior compartment (deep) of the leg - flexor digitorum longus: insertion

Answer 44

base of 2-5th distal phalanges

Question 45

posterior compartment (deep) of the leg - flexor digitorum longus: actions (3)

Answer 45

plantarflexion, inversion, and flexion of digits 2-5

Question 46

posterior compartment (deep) of the leg - flexor hallicus longus: origins (2)

Answer 46

distal 2.3 of posterior surface of fibu;a and interosseous memebrane

Question 47

posterior compartment (deep) of the leg - flexor hallicus longus: insertion

Answer 47

base of distal phalanx of hallux

Question 48

posterior compartment (deep) of the leg - flexor hallicus longus: actions (3)

Answer 48

plantarflexion, inversion, and flexion of hallux

Question 49

what is the flexor retinaculum?

Answer 49

band of connective tissue covering the flexor tendons on the medial surface of the ankle

Question 50

tarsal tunnel

Answer 50

located on the inside of the ankle, and is formed by the ankle bones and the band of ligaments that stretches across the foot

Question 51

what consists the tarsal tunnel? and memory aid

Answer 51

"Tom Dick And Very Nervous Harry" - Tibialis posterior - flexor Digitorum longus - posterior tibial Artery & Vein - tibial Nerve - flexor Hallicus longus