It explores how living systems work and interact, covering a vast range of topics, including:
* How cells function: From the basic processes of metabolism and energy production to how cells communicate and specialize.
* Organ systems: The workings of the circulatory, respiratory, digestive, nervous, and other systems, including how they cooperate to maintain homeostasis.
* Organism-level functions: How the body responds to changes in the environment, regulates its internal environment, and carries out essential tasks like movement, reproduction, and behavior.
Key elements of physiology:
* Focus on function: Physiology aims to understand how living organisms work, rather than just their structure (which is the domain of anatomy).
* Mechanistic approach: It seeks to explain biological processes by identifying the underlying mechanisms.
* Integration of multiple levels: Physiology considers functions at all levels of organization, from molecules to entire organisms.
* Experimental approach: Physiological research relies heavily on experiments to test hypotheses and gain insights into how living systems operate.
In short, physiology is the study of life in action. It's a fascinating field that helps us understand the complexity and wonder of the living world.