Leg Muscles

Question 1

Gastrocnemius

Answer 1

Lateral head – lateral condyle of femur
Medial head – popliteal surface and medial condyle of femur.
Both to the posterior calcaneus via calcaneal tendon
Plantar flexes ankle joint and assists in flexion of knee joint
Tibial nerve

Question 2

Soleus

Answer 2

Post. Head of fibula and soleal line to the post. calcaneous via the calcaneal tendon
Plantar flexes ankle and stabilizes leg
Tibial nerve

Question 3

Plantaris

Answer 3

Popliteal surface to calcaneal tendon
Weakly assists gastrocnemius
TIbial nerve

Question 4

Popliteus

Answer 4

Lateral condyle of femur and lateral meniscus to posterior tibia
Medially rotates the knee
Tibial nerve

Question 5

Tibialis Posterior

Answer 5

Lat. Post. Tibia, post. fibula and interosseous membrane to navicular tuberosity, all cuneiforms, cuboid and metatarsals 2-4 Plantar flexes ankle and inverts the foot Tibial nerve

Question 6

Flexor Digitorum Longus

Answer 6

Med. Post. Tibia and inferior soleal line to the plantar bases of the 2-5 distal phalanges Flexes 2-5 toes and plantar flexes the ankle Tibial nerve

Question 7

Flexor Hallucis Longus

Answer 7

Distal 2/3 of post. Fibula and interosseous membrane to the base of the 1st distal phalanx Flexes toe 1 and plantar flexes the ankle Tibial nerve

Question 8

Fibularis Longus

Answer 8

Head and prox. 2/3 of lateral fibula to the plantar base of metatarsal 1 and medial cuneiform
Everts foot and weakly plantar flexes ankle Superficial fibular nerve

Question 9

FIbularis Brevis

Answer 9

Dist. 2/3 of lat. Fibula to the base of the 5th metatarsal

Everts foot and weakly plantar flexes the ankle Superficial fibular nerve

Question 10

Tibialis Anterior

Answer 10

Lateral condyle and prox ½ of lat. Tibia to the medial cuneiform and base of 1st metatarsal Dorsiflexes the ankle and inverts the foot Deep fibular nerve

Question 11

Extensor Hallucis Longus

Answer 11

Middle ½ of ant. Fibula and interosseous membrane to the base of the 1st distal phalanx Extends toe 1 and dorsiflexes ankle
Deep fibular nerve

Question 12

Extensor Digitorum Longus

Answer 12

Lat. Condyle to tibia and interosseous membrane to the middle and distal phalanges of toes 2-5
Extends toes 2-5 and dorsiflexes ankle Deep fibular nerve

Question 13

Fibularis Tertius

Answer 13

Distal 1/3 of ant. Fibula and interosseous membrane to the base of 5th metatarsal Dorsiflexes ankle and aids in eversion of the foot
Deep fibular nerve