The transplantation of an organ from one body to another is known as organ transplant. The person who gives the organ is called the donor, while the person who receives is called the recipient. Organ transplant is done to replace the function of the failed organ so that the recipient can live normally. Organs that can be transplanted are the kidney, heart, liver, lungs, pancreas, intestine and thymus. Tissues include bones, tendons (both referred as musculoskeletal grafts), corneas, skin, heart valves and veins. Worldwide, kidney transplant is the most common organ transplantation, followed closely by the liver and then the heart. The cornea and musculoskeletal grafts are the most commonly transplanted tissues.