does the quadriceps femoris group flex or extend the leg
Full Muscles of the Leg and Foot Description. [Continued from above] . . . The anterior muscles, such as the quadriceps femoris, iliopsoas, and sartorius, work as a group to flex the thigh at the hip and extend the leg at the knee.Posterior muscles, such as the hamstrings and gluteus maximus, produce the opposite motion â extension of the thigh at the hip and flexion of the leg at the knee.Continued from above] . . . The anterior muscles, such as the quadriceps femoris, iliopsoas, and sartorius, work as a group to flex the thigh at the hip and extend the leg at the knee.