Heart, lungs, liver, kidneys and pancrea are organs. An organ donor is a braindead individual, whose life functions are maintained mechanically. The tissue types of the organ donor and the organ recipient must match as closely as possible.
Cornea, sclera, heart valves, bone, tendons, cartilage and skin are tissues. Tissue donor may be a living or a deceased person. Organ donors can also be tissue donors, if they fulfil the specific criteria for tissue donation.
The tissues listed above can be procured from a deceased person. A living donor can donate bone tissue when in a hip procedure, where a prosthesis is replacing the donated femoral head. An amniotic membrane, which is the innermost membrane of the amniotic sac, can be donated during a planned cesarean section. Tissue transplants do not normally cause rejection.