What is Organ (biology)?
In [[biology]], an '''organ''' is a group of [[tissue (biological)|tissues]] that work together in an organism. They specialise in particular vital functions. They create an [[organ system]] which, as a whole, is an [[organism]]. These are examples of organs: * [[Heart]] * [[Lung]]s * [[Brain]] * [[Ear]] * [[Eye]] * [[Gall bladder]] * [[Stomach]] * [[Spleen]] * [[Bones]] * [[Pancreas]] * [[Kidney]]s * [[Liver]] * [[Intestine]] * [[Skin]] * [[Uterus]] * [[Bladder]] == Classification == [[Organelle]]s > [[Cell]]s > [[Tissue (biological)|Tissues]] > Organs > [[Organ system]]s > [[Organism]] {{Human systems and organs}} {{Evolution}} [[Category:Organs| ]]