Muscles of Posterior Thigh MT Flashcards Preview

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Flashcards in Muscles of Posterior Thigh MT Deck (22)
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1

Long head (biceps femoris) origin

Ischial tuberosity

2

Long head (biceps femoris) insertion

Head of the Fibula, lateral aspect

3

Long head (biceps femoris) innervation

Tibial N. (L4-S3)

4

Long head (biceps femoris) action

Flexion of Knee
Extension of Hip (weak)
Lateral Rotation of Tibia

5

Short head (biceps femoris) origin

Linea Aspera of Femur

6

Short head (biceps femoris) insertion

Head of the Fibula, Lateral aspect

7

Short head (biceps femoris) innervation

Common Fibular N. (L4-S2)

8

Short head (biceps femoris) action

Flexion of Knee
Extension of Hip (weak)
Lateral Rotation of Tibia

9

Semitendinosus origin

Ischial tuberosity

10

Semitendinosus insertion

Pes Anserinus (posterior slip)

11

Semitendinosus innervation

Tibial N. (L4-S3)

12

Semitendinosus action

Flexion of Knee
Extension of Hip (weak)
Medial Rotation of Tibia

13

Semimembranosus origin

Ischial Tuberosity

14

Semimembranosus insertion

Medial Aspect of the Tibial condyle

15

Semimembranosus innervation

Tibial N. (L4-S3)

16

Semimembranosus action

Flexion of Knee
Extension of Hip (weak)
Medial Rotation of Tibia

17

What are the muscles of the posterior thigh?

Biceps femoris, semitendinosus, Semimembranosus

18

What is the common origin of all of these muscles?

Ischial Tuberosity

19

What is the common innervation of these muscles?

Tibial N

20

What muscle does not originate at the ischial tuberosity or have innervation by tibial N?

Short head of biceps femoris

21

What is a common function(s) of all posterior thigh muscles?

Flexion of the knee and weak hip extension

22

What muscles of the posterior thigh act as medial rotators?

Semitendinosus and semimembranosus