a leading text on human anatomy, written by Henry Gray in 1856.a leadingtextbook on human anatomy, which gives a detailed account of the structure and organization of the human body, contains over 1,200 pages and many hundreds of illustrations describing each part of the body. It was written in the mid-1800s by English anatomist Henry Gray (ca. 1825-1861). It has been updated several times since its first issue and is a standard text for medical students, medical professionals and artists.