Leg

Question 1

tibialis anterior origin

Answer 1

lateral condyle and superior ½ of lateral surface of tibia and interosseous membrane

Question 2

tibialis anterior insertion

Answer 2

medial and inferior surfaces of medial cuneiform and base of 1st metatarsal

Question 3

tibialis anterior innervation

Answer 3

deep fibular (L4, L5)

Question 4

tibialis anterior action

Answer 4

dorsiflexes ankle and inverts foot

Question 5

extensor digitorum longus origin

Answer 5

lateral condyle of tibia and superior ¾ of medial surface of the tibia and interosseous membrane

Question 6

extensor digitorum longus insertion

Answer 6

middle and distal phalanges of lateral 4 digits

Question 7

extensor digitorum longus action

Answer 7

extends lateral 4 digits and dorsiflexes ankle

Question 8

extensor hallucis longus origin

Answer 8

middle part of anterior surface of fibula and interosseous membrane

Question 9

extensor hallucis longus insertion

Answer 9

dorsal aspect of base of distal phalanx of great toe

Question 10

extensor hallucis longus innervation

Answer 10

deep fibular (L5, S1)

Question 11

extensor digitorum longus innervation

Answer 11

deep fibular (L5, S1)

Question 12

extensor hallucis longus action

Answer 12

extends great toe; dorsiflexes ankle

Question 13

peroneus tertius origin

Answer 13

inferior ⅓ of anterior surface of fibula and interosseous membrane

Question 14

peroneuus tertius insertion

Answer 14

dorsum of base of 5th metatarsal

Question 15

peroneus tertius innervation

Answer 15

deep fibular (L5, S1)

Question 16

peroneus tertius action

Answer 16

dorsiflexes ankle and aids in eversion of the foot

Question 17

peroneus longus origin

Answer 17

head and superior two thirds of lateral surface of fibula

Question 18

peroneus longus insertion

Answer 18

base of 1st metatarsal and medial cuneiform

Question 19

peroneus longus innervation

Answer 19

superficial fibular nerve (L5, S1, S2)

Question 20

peroneus longus action

Answer 20

everts foot and weakly plantarflexes ankle

Question 21

peroneus brevis origin

Answer 21

inferior ⅔ of lateral surface of fibula

Question 22

peroneus brevis insertion

Answer 22

dorsal surface of tuberosity on lateral side of base of 5th metatarsal

Question 23

peroneus brevis innervation

Answer 23

superficial fibular (L5, S1, S2)

Question 24

peroneus brevis action

Answer 24

everts foot and weakly plantarflexes ankle

Question 25

gastrocnemius origin

Answer 25

lateral head: lateral aspect of lateral condyle of femur | medial head: popliteal surface of femur, superior to medial condyle

Question 26

gastrocnemius insertion

Answer 26

posterior surface of calcaneus via calcaneal tendon

Question 27

gastrocnemius innervation

Answer 27

tibial (S1, S2)

Question 28

gastrocnemius action

Answer 28

plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint

Question 29

soleus origin

Answer 29

posterior aspect of head of fibula, superior ¼ of posterior surface of fibula soleal line and medial border of tibia

Question 30

soleus insertion

Answer 30

posterior surface of clacaneus vis cancaneal tendon

Question 31

soleus innervation

Answer 31

tibial (S1, S2)

Question 32

soleus action

Answer 32

plantarflexes ankle independent of knee position and steadies leg on foot

Question 33

plantaris origin

Answer 33

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

Question 34

plantaris insertion

Answer 34

posterior surface of calcaneus via calcaneal tendon

Question 35

plantaris innervation

Answer 35

tibial (S1, S2)

Question 36

plantaris action

Answer 36

weakly assists gastrocnemius in plantarflexing ankle and flexing knee

Question 37

popliteus origin

Answer 37

lateral surface of lateral condyle of femur and lateral meniscus

Question 38

popliteus insertion

Answer 38

posterior surface of tibia, superior to soleal line

Question 39

popliteus innervation

Answer 39

tibial (L4, L5, S1)

Question 40

popliteus action

Answer 40

weakly flexes knee and unlocks it

Question 41

flexor hallucis longus origin

Answer 41

inferior ⅔ of posterior surface of fibula and inferior part of interosseus membrane

Question 42

flexor hallucis longus innervation

Answer 42

tibial (S2, S3)

Question 43

flexor hallucis longus acction

Answer 43

flexes great to at all joints' weakly flexes ankle; supports medial longitudinal arches of the foot

Question 44

flexor digitorum longus origin

Answer 44

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

Question 45

flexor digitorum longus insertion

Answer 45

base of distal phalanges of lateral 4 digits

Question 46

flexor digitorum longus innervation

Answer 46

tibial (S2, S3)

Question 47

flexor digitorum longus action

Answer 47

flexes lateral 4 digits and plantarflexes ankle; supports longitudinal arches of foot

Question 48

tibialis posterior origin

Answer 48

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

Question 49

tibialis posterior insertion

Answer 49

tuberosity of navicular, cuneiform, and cuboid, and bases of 2nd, 3rd, and 4th metatarsals

Question 50

tibialis posterior innervation

Answer 50

tibial (L4, L5)

Question 51

tibialis posterior action

Answer 51

plantarflexes ankle and inverts foot

Question 52

compartments of the leg

Answer 52

anterior posterior lateral deep

Question 53

contents of anterior compartment

Answer 53

``` deep fibular nerve anterior artery and vein tibialis anterior extensor hallucis longus extensor digitorum longus ```

Question 54

contents of lateral compartment

Answer 54

superficial fibular nerve fibularis brevis fibularis longus

Question 55

contents of posterior compartment

Answer 55

gastrocnemius | soleus

Question 56

contents of deep posterior compartment

Answer 56

``` flexor hallucis longus tibialis posterior flexor digitorum longus popliteus fibular artery and vein tibial nerve posterior tibial artery and vein ```

Question 57

triceps surae

Answer 57

gastrocnemius and soleus

Question 58

compartment syndrome clinical presentation

Answer 58

``` pain/swelling paralysis pallor paresthesia pulselessness ```

Question 59

a syndesmosis sprain involves sprain or rupture of the

Answer 59

anterior tibiofibular ligament posterior tibiofibular ligament interosseous membrane

Question 60

what is the purpose of the compartments in the lower leg?

Answer 60

venous return