Anatomy
The science that deals with the structures of the body and the relationship of various parts to each other is known as Anatomy. The knowledge of these structures is very important in order to understand the functions of the body. The discipline of anatomy is subdivided into gross (or macroscopic) anatomy and microscopic anatomy. Gross anatomy is the study of structures that can be seen by unaided vision with the naked eye. Microscopic anatomy is the study of structures on a microscopic scale, including histology (the study of tissues) and cytology (the study of cells).
Physiology
The science that elucidates the normal functions of the body and explains how the various organs and systems work together to function as a single unit is called Physiology. Human physiology is the science of the mechanical, physical, and biochemical functions of normal human or human tissues or organs.
Anatomy and physiology are closely related fields of study anatomy, the study of form, and physiology, the study of function. The study of how physiology is altered in disease is Pathophysiology.