Unit Four: Lower Extremity: Individual Muscles

Question 1

Where does the fibularis longus originate and insert?

Answer 1

1. Superior fibula, lateral tibial condyle. 2. Base of 1st metatarsal.

Question 2

Where does the fibularis brevis originate and insert?

Answer 2

1. Mid-lateral fibula. 2. Base of 5th metatarsal.

Question 3

Where does the extensor hallucis longus originate and insert?

Answer 3

1. Anterior fibula. 2. Distal phalanx of 1st toe.

Question 4

Where does the tibialis anterior originate and insert?

Answer 4

1. Lateral condyle of proximal tibia. 2. 1st metatarsal and medial cuneiform.

Question 5

Where does the extensor digitorum originate and insert?

Answer 5

1. Lateral tibial condyle, anterior fibula, interosseous membrane. 2. Distal phalanx of 2nd-5th toes.

Question 6

Where does the fibularis tertius originate and insert?

Answer 6

1. Anterior distal fibula. 2. Base of 5th metatarsal.

Question 7

Where does the gastrocnemius originate and insert?

Answer 7

1. Posterior surfaces of femoral epicondyles. 2. Calcaneus via achilles tendon.

Question 8

Where does the plantaris originate and insert?

Answer 8

1. Lateral supracondylar ridge of femur. 2. Calcaneus via achilles tendon.

Question 9

Where does the soleus originate and insert?

Answer 9

1. Head and proximal shaft of fibula, medial tibial border. 2. Calcaneus via achilles tendon.

Question 10

Where does the popliteus originate and insert?

Answer 10

1. Lateral condyle of femur. 2. Posterior, proximal tibia.

Question 11

Where does the tibialis posterior originate and insert?

Answer 11

1. Fibula, tibia. 2. Metatarsals, distal tarsals.

Question 12

Where does the flexor digitorum longus originate and insert?

Answer 12

1. Posteromedial tibia. 2. Distal phalanges of toes 2-5 (MP, PIP, DIP).

Question 13

Where does the flexor hallucis longus originate and insert?

Answer 13

1. Posterior inferior fibula. 2. Distal phalanx of 1st toe.