Physiology, meaning 'nature, starting place', and -λογία (-logia), meaning 'study of' is the scientific observe of functions and mechanisms in a residing 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 dwelling machine.in keeping with the lessons of organisms, the sector can be divided into clinical body structure, animal body structure, plant physiology, cellular physiology, and comparative body structure.critical to physiological functioning are biophysical and biochemical procedures, homeostatic control mechanisms, and verbal exchange between cells. Physiological kingdom is the situation of regular feature, at the same time as pathological state refers to unusual situations, along with human sicknesses.The Nobel Prize in body structure or medicinal drug is offered by using the Royal Swedish Academy of Sciences for awesome scientific achievements in body structure related to the field of medication.The study of human physiology as a clinical subject originates in classical Greece, at the time of Hippocrates (overdue fifth century BC).outdoor of Western lifestyle, early styles of body structure or anatomy may be reconstructed as having been present at across the equal time in China,India and some place else. Hippocrates included his notion system called the concept of humours, which consisted of 4 primary substances: earth, water, air and fireplace. Every substance is known for having a corresponding humour: black bile, phlegm, blood and yellow bile, respectively.