Vastus medialis (a tear-shaped muscle right above your knee)
The primary function of the knee extension muscle is to straighten the leg by extending the knee joint.
The muscle primarily responsible for the last 10 degrees of knee extension is the popliteus muscle. It is a small muscle located at the back of the knee joint and helps to unlock the knee by internally rotating the tibia on the femur.
Gastrocnemius muscle
An agonist muscle is a muscle that plays a part in the extension of a muscle. The agonist muscles for a knee extension are the quadriceps and hamstrings.
The flexor would be the hamstring, and gastrocnemius, which bend/flex the knee. The quadriceps, are extensors, which straighten/extend the knee.
The muscle that contracts when the leg is extended at the knee is call the gastrocnemius muscle
Quadriceps muscle or thigh muscle.
the muscle that is attached to the knee joint is the HINGE
hamstrings
The Quadriceps.
Quadriceps femoris
knee