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.
A femoral popliteal bypass is an operation to bypass the blocked portion of the artery in the leg using a piece of another blood vessel. The following information will help explain the process of a femoralpopliteal bypass. Before your operation. Coming into hospital. The operation. After the operation.