Posterior Compartment Of The Thigh

Question 1

What muscles make up the posterior compartment of the thigh

Answer 1

Biceps Femoris
Semitendinosis
Semimembranosus

Question 2

Biceps Femoris is made up of 2 muscles. What are the Origins of each and where do they both insert? What are the innervations of each?

Answer 2

Insertion of Both: Head of Fibula
Long: Ischial Tuberosity
Short: Lateral Supracondylar line of femur

Long: Tibial Nerve
Short: Common Peroneal Nerve (Fibular Nerve)

Question 3

Innervation of Posterior compartment of the thigh excluding the short tendon of biceps Femoris

Answer 3

Tibial Nerve

Question 4

Innervation of semitendinosus

Answer 4

Tibial nerve

Question 5

Innervation of Semimembranosus

Answer 5

Tibial Nerve

Question 6

The tibial nerve arises from what fibers?

Answer 6

L5-S2

Question 7

The common Origin of all muscles in the posterior compartment except for the short tendon of biceps Femoris is>

Answer 7

Ischial Tuberosity

Question 8

Origin of Semimembranosus

Answer 8

Ischial Tuberosity

Question 9

Insertion of Biceps Femoris

Answer 9

Head of Fibula

Question 10

Insertion of Semitendinosus

Answer 10

Proximal end of Tibia

Question 11

Insertion of Semimembranosus

Answer 11

Medial condyle of tibia

Question 12

The common peroneal nerve or the fibular nerve originates from which fibers?

Answer 12

L5-S2