Leg Muscles

Question 1

what are the posterior superficial leg muscles

Answer 1

1. gastroc
   2.soleus
2. plantaris

Question 2

what are the posterior deep leg muscles

Answer 2

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

Question 3

what is the major innervation of the posterior compartment of the leg

Answer 3

tibial nerve

Question 4

what are the muscles of the lateral compartment of the leg

Answer 4

fibularis longus and fibularis brevis

Question 5

what is the major innervation of the lateral compartment of the leg

Answer 5

superficial fibular nerve

Question 6

what are the muscles of the anterior leg

Answer 6

tibialis anterior, extensor hallucis longus, extensor digitorum longus, and fibularis tertius

Question 7

what is the major innervation of the anterior leg?

Answer 7

deep fibular nerve

Question 8

what is the origin of the gastroc?

Answer 8

upper posterior medial and lateral condyle of the femur

Question 9

what is the insertion of the gastroc?

Answer 9

Calcaneal tendon-calcaneous

Question 10

what is the action of the gastroc?

Answer 10

plantarflexion of the foot and flexion of the knee

Question 11

what is the origin of the soleus

Answer 11

The soleal line and medial border of the tibia. The posterior aspect of the fibular proximal shaft.

Question 12

what is the insertion of the soleus

Answer 12

calcaneal tendon- calcaneus

Question 13

what is the origin of the plantaris

Answer 13

the lateral supracondylar line of the femur (superior to the lateral head of the gastroc)

Question 14

what is the insertion of plantaris

Answer 14

calcaneal tendon- calcaneous

Question 15

what is the action of the soleus

Answer 15

plantar flexion of the foot

Question 16

What is the action of plantaris

Answer 16

plantarflexion of the foot and flexion of the knee

Question 17

what is the origin of popliteus

Answer 17

Lateral surface of femoral condyle

Question 18

what is the insertion of popliteus

Answer 18

Posterior surface of proximal tibia

Question 19

what is the action of popliteus

Answer 19

In a closed chain movement, will laterally rotate the femur
In an open chain movement, will internally rotate tibia

Question 20

what is the origin of flexor digitorum longus

Answer 20

The medial side of the posterior surface of the tibia

Question 21

what is the insertion of flexor digitorum longus

Answer 21

The distal phalanges of the lateral for toes

Question 22

what is the action of flexor digitorum longus

Answer 22

Flexion of the lateral 4 toes

Question 23

what is the origin of flexor halluces longus

Answer 23

The inferior 2/3 of the posterior surface of the fibula and interosseous membrane

Question 24

what is the insertion of flexor halluces longus

Answer 24

The plantar surface of the distal phalanx of the great toe

Question 25

what is the action of flexor halluces longus

Answer 25

Flexion of the great toe, inversion, and plantarflexion

Question 26

what is the origin of tibialis posterior

Answer 26

The posterior surface of the interosseous membrane and shafts of the tibia and fibula

Question 27

what is the insertion of tibilis posterior

Answer 27

The tuberosity of the navicular and medial cuneiform bone

Question 28

what is the action of tibialis posterior

Answer 28

Inversion and plantar flexion of the foot

Question 29

what is the origin of fibularis longus

Answer 29

The upper lateral surface and head of fibula and the interosseous membrane

Question 30

what is the insertion of fibularis longus

Answer 30

The base of metatarsal I & M and the cuneiforms

Question 31

What is the action of fibularis longus?

Answer 31

Eversion and plantar flexion of the foot

Question 32

What action do fibularis longus and fabulous brevis have in common

Answer 32

Eversion and plantar flexion of the foot

Question 33

What is the origin of fibularis brevis?

Answer 33

The lateral distal surface of shaft, a fibula

Question 34

What is the insertion of fibularis brevis

Answer 34

Lateral tubercle at the base of metatarsal V

Question 35

What is the origin of tibialis anterior?

Answer 35

The lateral condyle of the tibia

Question 36

What is the insertion of tibialis anterior?

Answer 36

The medial cuneiform and base of metatarsal I

Question 37

What is the action of tibialis anterior?

Answer 37

Dorsiflexion and inversion of the foot

Question 38

What is the origin of extensor hallucis longus?

Answer 38

The medial surface of fibula and interosseous membrane

Question 39

What is the insertion for extensor hallucis longus?

Answer 39

The base of the distal phalanx of the great toe

Question 40

What is the action of extensor hallucis longus?

Answer 40

Extension of great toe and dorsiflexion of the foot

Question 41

What is the origin of extensor digitorum longus?

Answer 41

The medial surface of the fibula, and the lateral tibial condyle

Question 42

What is the insertion of extensor digitorum longus?

Answer 42

The distal and middle phalanges of the lateral four toes

Question 43

What is the action of extensor digitorum longus?

Answer 43

Extension of four toes and dorsiflexion of the foot

Question 44

What is the origin of fibularis tertius?

Answer 44

The distal part of the anterior surface of the fibula

Question 45

What is the insertion of fibularis tertius?

Answer 45

The dorsal medial surface of the base of metatarsal V

Question 46

What is the action of fibularis tertius?

Answer 46

Dorsiflexion and eversion of the foot

Question 47

What is the nerve that supplies the anterior surface of the leg?

Answer 47

The deep fibular nerve