Supernumerary body part considered to have lost much or all of their original function through evolution. These body parts can be classed as additional to the required functioning of the body. In human anatomy the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, and cybernetics is the study of computer technology in relation to organisms which can include replacement or additional body parts. Body integrity identity disorder (BIID) is a psychiatric disorder in which a person thinks that they have one or more additional limbs than they should, despite having two arms
Occupational medicine Occupational medicine Occupational medicine, until 1960 called industrial medicine, is the branch of medicine which is concerned with the maintenance of health in the workplace, including prevention and treatment of diseases and injuries, with secondary objectives of maintaining and increasing productivity and social adjustment in the workplace. It is, thus, the branch of clinical medicine active in the field of occupational health and safety. OM specialists work to ensure that the highest standards of occupational health and safety are achieved and maintained in the workplace. While OM may involve a wide number of disciplines, it centers on preventive medicine and