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
Transfusion medicine Transfusion medicine Transfusion medicine (or "transfusiology") is the branch of medicine that is concerned with transfusion of blood and blood components. It encompasses issues of blood donation, immunohematology and other laboratory testing, transfusion practices, patient blood management, therapeutic apheresis, stem cell collections, cellular therapy, and coagulation. Laboratory management and understanding of state and federal regulations related to blood products are also a large part of the field. Transfusion Medicine is usually a branch of clinical pathology. The blood donor center is the facility that collects and processes blood products. The blood bank is the section of the clinical laboratory where