 Anatomy, Anatomy Greek Anatom, dissection is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science which deals with the structural organization of living things. Italy is an old science, having its beginnings in prehistoric times. Anatomy is inherently tied to embryology, comparative anatomy, evolutionary biology, and phylogeny, as these are the processes by which anatomy is generated over immediate embryology and long evolution time scales. Human anatomy is one of the basic essential sciences of medicine.For anatomy and physiology, it study respectively the structure and function of organisms and their parts, make a natural pair of related disciplines, and they are often studied together. The discipline of anatomy is divided into macroscopic and microscopic anatomy. Macroscopic anatomy, or gross anatomy, is the examination of an animal's body parts using a native eyesight. Gross anatomy also includes the branch of superficial anatomy. Microscopic anatomy involves the use of optical instruments in the study of the tissues of various structures, known as histology, and also in the study of cells. The history of anatomy is characterized by a progressive understanding of the functions of the organs and structures of the human body. Methods have also improved dramatically, advancing from the examination of animals by dissection of carcasses and cadavers corpses to 20th century medical imaging techniques including x-ray, ultrasound, and magnetic resonance imaging.