The muscles used to straighten the leg are commonly known as the Quadriceps, a group of four muscles on the front of the thigh. This, however, is only the cast when the knee is isolated. If you were to stand up from a squatted position, you would also be using your gluteal muscles as well as your hamstrings to extend the thigh and stabilize the knee, while your quads and inner thigh muscles (the adductor) help to straighten the the knee. You would also be using your calf muscles to straighten the ankle.
The muscles in a leg are used to straighten it. They lengthen and contract to move and control leg movement, including straightening.
The bones and muscles of the leg work together when the leg moves. The bones give the leg its structure, while the muscles hang onto the bones and allow the leg to actually move. The muscles make their movements via contractions and expansions.
Ummm I think chicken legs :P
With exercise bands, you can work out tons of muscles. Muscles that you can work out are arm muscles, leg muscles and back muscles. With leg muscles, you can work out the thighs, and calves muscles.
To extend your knee, you need to use the quadriceps muscles located at the front of your thigh. These muscles work together to straighten the knee joint. Strengthening exercises like leg extensions can help improve knee extension strength.
The primary muscles responsible for flexing the leg at the knee joint are the hamstrings (biceps femoris, semitendinosus, semimembranosus) and the gracilis. These muscles work together to bend the knee and bring the lower leg towards the thigh.
Your leg muscles work together to help you walk up stairs.
The muscles used in the leg press exercise are your Quads primarily. Hamstring gets a good work out too.
quadriceps
the stairmaster works all of your leg muscles
The flexor muscles of the leg include the hamstrings and the iliopsoas, which help to bend the knee and bring the thigh towards the abdomen. The extensor muscles of the leg are primarily the quadriceps, which straighten the knee and help to lift the leg.
The main action of the medial thigh muscles is adduction, which means bringing the leg towards the midline of the body. These muscles work together to bring the legs closer together during movements like walking or crossing the legs.