Full Definition of VARIATION. 1. a: the act or process of varying: the state or fact of being varied b: an instance of varying c: the extent to which or the range in which a thing varies. 2.: declination 6. a change in the form, position, condition, or amount of something. : something that is similar to something else but different in some way. music: a repeated version of a short piece of music with changes in its rhythm, tune, or harmony.
Types of human physiology. Human physiology is the study of functions of the human body that can be divided into the following types:. Cell physiology. This is the cornerstone of human physiology; it is the study of the functions of cells. Special physiology. This is the study of the functions of special organs.
What are some specialties of physiology? Specialties and subdivisions of physiology include cell physiology, special physiology, systemic physiology, and pathological physiology, often called simply pathology. Cell physiology is the study of the functions of cells, including both chemical processes within cells and chemical interactions between cells. Special physiology is the physiological study of specific organs, such as cardiac physiology, which is the study of heart function. Systemic physiology is comparable to systemic anatomy since it is the study of the functions of different body systems, such as renal physiology and neurophysiology.