1 A ligand is any molecule that binds to a specific site on a protein or other molecule. In this case, the estrogen hormone 17-beta-estradiol is the ligand, and the estrogen receptor is the protein.  Binding turns on, or activates, a hormone receptor.
A femoral nerve block is a type of regional anesthesia in which the femoral nerve, located in the groin area, is deadened to allow surgery in the leg or knee area.
The femoral nerve begins as the largest nerve to extend from the lumbar plexus in the lower back as a combination of fibers from the L2, L3, and L4 spinal nerves.... Click to read more below. The femoral nerve is the major nerve that serves the tissues of the thigh and leg, including the muscles and skin.While the much larger sciatic nerve also passes through the thigh on its way to the lower leg and foot, only the femoral nerve innervates the tissues of the thigh.he femoral nerve begins as the largest nerve to extend from the lumbar plexus in the lower back as a combination of fibers from the L2, L3, and L4 spinal nerves.... Click to read more below. The femoral nerve is the major nerve that serves the tissues of the thigh and leg, including the muscles and skin.