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Physiology is the branch of biology relating to the function of organs and organ systems, and how they work within the body to respond to challenges. It covers life from the single cell, where it overlaps with biochemistry and molecular biology, through questions about how individual organs work (e.g. heart, lungs, kidneys) right up to the whole-organism level, where physiologists tackle questions about hormonal influences on behaviour and the function of the brain.
Physiology therefore has something to say about every aspect of life: our integrated approach makes physiologists invaluable contributors in studies ranging from genetics to psychology. Physiology deals with the function and malfunction of parts of the human body with reference to health and disease (areas relating to medicine).
