The thigh is the part of the leg located between the hip and the knee. It is made up of several muscles, including the quadriceps at the front and the hamstrings at the back. The thigh supports the body's weight during activities like walking, running, and jumping. The thigh bone, known as the femur, is the longest and strongest bone in the body. It connects the hip joint to the knee joint, allowing for a wide range of motion. The thigh also contains important blood vessels and nerves that supply the leg.