Muscles of the posterior thigh Flashcards Preview

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Flashcards in Muscles of the posterior thigh Deck (10):
1

How many muscles are in the posterior compartment of the thigh?

3

2

What are the muscles of the posterior thigh collectively known as?

The hamstrings

3

What 3 muscles are in the posterior compartment of the thigh?

Biceps femoris
Semitendinosus
Semimembranosus

4

What is special about the Biceps femoris?

It has 2 heads

5

What nerve innervates all the muscles in the posterior compartment of the thigh?

The sciatic nerve

6

What is the main action of the Biceps femoris?

Flexion at the knee
Extends leg at the hip
Lateral rotation of the hip and knee

7

What is the name of the two heads of the Biceps femoris?

Long and short. Short head runs deep to the long head

8

What is the action of the Semitendinosus muscle?

Flexion of the leg at the knee joint
Extension of the thigh at the hip
Medially rotates the thigh at the hip and leg at the knee

9

Which muscle is deeper, the Semitendinosus or Semimembranosus?

The Semimembranosus

10

What is the main action of the Semimembranosus muscle?

Flexion of the leg at the knee
Extension of the thigh at the hip
Medially rotates the thigh at the hip and leg at the knee