Introduction To Human Body

Anatomy is the study of the structure of the body and of the relationship of its constituent parts to each other. In general anatomy a geographical study is made and each region, eg. arm, legs, head, chest, etc..., is found to consist of a no. of structures common to all regions such as bones, muscles, nerves, blood vessels and so on. From this study it follows that a no. of different system exists. These have been grouped together and described under the heading systematic anatomy.
    A study of the position and relationship of one part of the body couldn't be separated from a consideration of the use of each structure and system. This study led to the employment of the functional anatomy which is closely related to the study of Physiology. Then again it was found that certain structures could be examined by the naked eyes and the term microscopic anatomy was introduced to describe this study, in distinction to microscopy anatomy which necessitates the use of a microscope. Closely allied to the study of anatomy are histology, the study of fine structures of the body, and cytology, the study of the cells.
        
Physiology:             It is the study of the function of the normal human body. It is closely linked with the study of all living things in the subject biology; as well as this there is the work of the cytologist, interested in detail of the structure of cells and that of the biochemist, dealing with the chemical changes and activities of the cells and investigating the complex chemistry of life and there is physics, the study of the physical reactions  and movements taking place in the body. The body is made up of many tissues and organs, each having it's own particular function to perform. The cell is the unit of the smallest element of the body of which all parts are comprised. The cells are adopted to form the special functions of the organ or tissue they are in. Some cells, such as those in the nervous system and muscles, are very specialized indeed; other, such as those in the connective tissues, are less highly developed. As a general rule the most highly specialized cells are the least able to withstand damage and also are the mosrt difficult to repair or replace.