Many medical and nursing databases use a form of controlled vocabulary known as MEsH or Medical Subject Headings. Designed to work with medical terminology, MEsH headings perform the same function as LC subject headings; articles, books and other media which an indexer recognize as being associated with a particular subject matter are assigned the proscribed subject heading. MeSH can make locating resources on a specific topic or area of study much easier. To illustrate the importance of MeSH Headings and how MeSH works, take a look at the resources listed below.