Painkillers, specifically narcotics, can cause constipation. A lot of receptors for the narcotic class of drugs are in the digestive tract, so it tends to bring everything to a halt, says Thomas Park, MD, a gastroenterologist with the University of Rochester Medical Center Park in New York.
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.
The quadriceps muscle group consists of four muscles: the rectus femoris, the vastus lateralis, the vastus intermedius, and the vastus medialis. These muscles form a large, fleshy mass that covers the front and sides of the femur (upper leg bone).They are the primary extensor of the knee.he quadriceps muscle group consists of four muscles: the rectus femoris, the vastus lateralis, the vastus intermedius, and the vastus medialis. It is a large fleshy mass that covers the front and sides of the femur bone (upper leg bone).