Lecture 8 Muscles of the Leg and Foot ORIGINS

Question 1

What is the origin of Tibialis Anterior (TA)?

Answer 1

Lateral condyle and upper half of lateral surface of shaft of tibia and interosseus membrane

Question 2

What is the origin of Extensor Digitorum Longus (EDL)?

Answer 2

Lateral condyle of tibial; upper two third of anterior surface of shaft of fibula and interosseus membrane

Question 3

What is the origin of Extensor Hallucis Longus (EHL)?

Answer 3

Middle half of anterior surface of shaft of fibula and interosseus membrane

Question 4

What is the origin of Peroneus Tertius?

Answer 4

Lower third of anterior surface of shaft of fibula and interosseus membrane

Question 5

What is the origin of Peroneus Longus?

Answer 5

Head of upper 2/3 of the lateral surface of the fibula

Question 6

What is the origin of Peroneus Brevis?

Answer 6

Lower 2/3 of lateral surface of fibula

Question 7

What is the origin of Plantaris?

Answer 7

Distal lateral supracondyle ridge of the femur

Question 8

What is the origin of Gastrocnemius?

Answer 8

Lateral head: lateral aspect of lateral condyle of femur and joint capsule
Medial head: Popliteal surface of the femur above the medial condyle and joint capsule.

Question 9

What is the origin of Soleus?

Answer 9

Posterior surface of head and upper, third of shaft of fibula soleal line on the tibia and the tendinous arch between tibia and fibula.

Question 10

What is the origin of Popliteus?

Answer 10

Lateral condyle of femur and lateral miniscus of the knee.
Originates within capsule

Question 11

What is the origin of Flexor Digitorum Longus (FDL)

Answer 11

The middle 1/3 of the posterior surface of tibia below soleal line.