Physiology

Physiology (ˌfɪziˈɒlədʒi; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical and physical functions in a living system. According to the classes of organisms, the field can be divided into medical physiology, animal physiology, plant physiology, cell physiology, and comparative physiology. Central to physiological functioning are biophysical and biochemical processes, homeostatic control mechanisms, and communication between cells. Physiological state is the condition of normal function. In contrast, pathological state refers to abnormal conditions, including human diseases. The Nobel Prize in Physiology or Medicine is awarded by the Royal Swedish Academy of Sciences for exceptional scientific achievements in physiology related to the field of medicine. Physiology is the branch of biology that focuses on the study of the functions and mechanisms of living organisms, from the molecular and cellular level to the level of whole organisms and populations. The foundations of physiology lie in several key areas, including anatomy, biochemistry, biophysics, genetics, and evolution. Anatomy is the study of the structure and organization of living organisms, from the microscopic level of cells and tissues to the macroscopic level of organs and systems. An understanding of anatomy is essential for understanding the physiological functions of organisms, as the structure of an organism often dictates its function. Biochemistry is the study of the chemical processes and substances that occur within living organisms. It provides the foundation for understanding the metabolic processes that are essential for life, such as the conversion of food into energy and the synthesis of molecules necessary for cellular function. Biophysics is the study of the physical properties of living organisms and their interactions with the environment.