Science glossary film: Organ

In medicine and biology, a distinct part of the body that performs a specialised function, such as the lungs, heart, liver or kidneys. Although an organ is a discrete, identifiable part of the body, it may have smaller systems and structures within it – such as the lens, cornea and retina in the eye.

Although an organ is a discrete, identifiable part of the body, it may have smaller systems and structures within it – such as the lens, cornea and retina in the eye.