GROSS ANATOMY

Detailed explanation-1: -Actions: The only muscle of the quadriceps to cross both the hip and knee joints. It flexes the thigh at the hip joint, and extends at the knee joint.

Detailed explanation-2: -quadriceps femoris: A group of four muscles found in the anterior region of the thigh, responsible for extension of the lower leg at the knee.

Detailed explanation-3: -The one muscle that extends the knee is the massive quadriceps. We saw it briefly in the last section. We’ll take a better look at it now. The main flexors of the knee are the so-called hamstring muscles, semi-membranosus, semitendinosus, and biceps femoris.

Detailed explanation-4: -Knee muscles at the front – Quadriceps. These muscles make up the quadriceps muscle group. Their main function is to extend the knee (straighten it).