Muscles Of Leg

Question 1

Tibialis anterior origin

Answer 1

• lateral condyl of tibia
• upper part of lateral surface of shaft of tibia
• adjoining interosseous membrane

Question 2

Tibialis anterior insertion

Answer 2

• Inferomedial surface of medial cuneiform

- Adjoining 1st metatarsal bone

Question 3

Extensor hallucis longus origin

Answer 3

• posterior half of medial surface of shaft of fibula

- adjoining interosseous membrane

Question 4

Extensor hallucis longus insertion

Answer 4

-dorsal surface of base of distal phalanx of big toe

Question 5

Extensor digitorum longus origin

Answer 5

• lateral condyl of tibia
• medial surface of shaft of fibula
• upper part of interosseous membrane

Question 6

Extensor digitorum longus insertion

Answer 6

• divides into 4 tendons
• tendons of 2, 3, 4th digits are joined by tendon of extensor digitorum brevis on lateral side
• inserted on bases of middle and distal phalanges

Question 7

Peroneus tertius origin

Answer 7

• lower 1/4 of medial surface of shaft of fibula

- adjoining interosseous membrane

Question 8

Peroneus tertius insertion

Answer 8

Medial part of base of 5th metatarsal bone

Question 9

Extensor digitorum brevis origin

Answer 9

Anterior part of superior surface of calcaneum

Question 10

Extensor digitorum brevis insertion

Answer 10

• divides into 4 tendons for medial 4 toes
• medial most part of muscle - extensor hallucis brevis - base of proximal phalynx of great toe
• other 3 join lateral side of extensor digitorum longus to form dorsal digital expansion

Question 11

Peroneus longus origin

Answer 11

• head of fibula

- upper 1/3 and posterior part of lateral surface of shaft of fibula

Question 12

Peroneus longus insertion

Answer 12

It runs through a tunnel in cuboid

• lateral side of base of first metatarsal
• adjoining medial cuneiform

Question 13

Peroneus brevis origin

Answer 13

• middle and lower 1/3 of lateral surface of shaft of fibula

- anterior and posterior intermuscular septa

Question 14

Peroneus brevis insertion

Answer 14

Lateral side of base of 5th metatarsal

Question 15

Gastrocnemius origin

Answer 15

Medial head:

• medial condyl of femur behind adductor tubercle
• popliteal surface of femur
• capsule of knee joint

Lateral head:

• lateral condyl of femur
• lateral supracondylar line
• capsule of knee joint

Question 16

Gastrocnemius insertion

Answer 16

Fuses with soleus to form tendo-achilles which inserts at middle part of posterior surface of calcaneum

Question 17

Soleus origin

Answer 17

• back of head of fibula and upper part of posterior surface of shaft
• soleal line of tibia and medial border of it’s shaft
• tendinous soleal Arch

Question 18

Plantaris origin

Answer 18

• lower part of lateral supracondylar line of femur

- oblique popliteal ligament

Question 19

Plantaris insertion

Answer 19

Posterior surface of calcaneum

Question 20

Popliteus origin

Answer 20

• lateral condyl of femur

- intracapsular

Question 21

Popliteus insertion

Answer 21

Posterior surface of tibia above soleal line

Question 22

Flexor digitorum longus origin

Answer 22

Posterior surface of tibia below soleal line

Question 23

Flexor digitorum longus insertion

Answer 23

Bases of distal phalanges of lateral 4 toes

Question 24

Flexor hallucis longus origin

Answer 24

• lower part of posterior surface of fibula

- Interosseous membrane

Question 25

Flexor hallucis longus insertion

Answer 25

Plantar surface of base of distal phalynx of big toe

Question 26

Tibialis posterior origin

Answer 26

• lateral part of posterior surface of tibia below soleal line
• posterior surface of fibula
• interosseous membrane

Question 27

Tibialis posterior insertion

Answer 27

• Tuberosity of navicular bone and other tarsal bones except talus
• bases of 2, 3, 4 metatarsal bones