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- DictionaryPhys·i·ol·o·gy/ˌfizēˈäləjē/
noun
- 1. the branch of biology that deals with the normal functions of living organisms and their parts.
noun
Physiology (from 'nature, origin', and 'study of') is the scientific study of functions and mechanisms in a living system. As a subdiscipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out chemical and physical functions in a living system. According to the classes of organisms, the field can be divided into medical physiology, ... Wikipedia