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Flashcards in Posterior Thigh Deck (12):
1

What innervates the biceps femoris?

Long head: sciatic nerve (tibial division, L5 - S2)
Short head: sciatic nerve (common fibular division)

2

What is the main action of the biceps femoris?

Flexes and laterally rotates leg

Long head: extends thigh the hip

3

What innervates the semimembranosus?

Sciatic nerve (tibial division)

4

What is the main action of the semimembranosus?

Flexes leg, extends thigh

5

What innervates the semitendinosus?

Sciatic nerve (tibial division)

6

What is the main action of the semitendinosus?

Flexes leg, extends thigh

7

What is the origin of the biceps femoris?

Long Head: Ischial tuberosity and sacrotuberous ligament

Short head: Supracondylar ridge, intermuscular septum, and linea

8

What is the insertion of the biceps femoris?

Head of the fibula and tibial condyle

9

What is the origin of the semitendinosus?

Ischial tuberosity with long head of biceps

10

What is the insertion of the semitendinosus?

Tibial bone and fascia of leg

11

What is the origin of the semimembranosus?

Ischial tuberosity

12

What is the insertion of the semimembranosus?

Tibial and Femoral condyles