Posterior Thigh Muscles Flashcards Preview

Gross Anatomy > Posterior Thigh Muscles > Flashcards

Flashcards in Posterior Thigh Muscles Deck (12):
1

Semitendinosus Origin

Ischial Tuberosity

2

Semitendinosus Insertion

Medial surface of superior part of tibia (Pes Anserinus)

3

Semitendinosus Innervation

Tibial division of sciatic nerve (L5, S1, S2)

4

Semitendinosus Action

Extend thigh
Flex leg
Medially rotate leg

5

Semimembranosus Origin

Ischial Tuberosity

6

Semimembranosus Insertion

Posterior part of medial condyle of tibia

7

Semimembranosus Innervation

Tibial division of sciatic nerve (L5, S1, S2)

8

Semimembranosus Action

Extend thigh
Flex leg
Medially rotate leg

9

Biceps Femoris (Short & Long heads) Origin

Long head: Ischial tuberosity

Short head: Linea aspera & Lateral supracondylar line of femur

10

Biceps Femoris (Short & Long heads) Insertion

Lateral side of head of fibula

*Tendon is split at this site by fibular collateral ligament of knee*

11

Biceps Femoris (Short & Long heads) Innervation

Long head: Tibial division of sciatic nerve (L5, S1, S2)

Short head: Common fibular division of sciatic nerve (L5, S1, S2)

12

Biceps Femoris (Short & Long heads) Action

Flexes leg and rotates it laterally when knee is flexed