Quadriceps

The Quadricpes are a large muscle group situated on the front of the thigh. They are made up of 4 muscles:

Rectus Femoris

Vastus Medialis

Vastus lateralis

Vastus intermedius.

Hamstrings

The hamstrings occupy the posterior body of the femur, situated on the back of the thigh. They form a set of tendons behind the knee comprising of:

Semitendinosis

Semimembranosus

Biceps femoris.

Gastrocnemius

The gastrocnemius muscle is a very powerful superficial muscle, situated in the back part of the lower leg.