What is the definition of pathophysiology?

Pathophysiology is defined as the study of the functional changes that occur in the body as a result of a disease or medical condition. This discipline focuses on understanding how diseases affect normal bodily functions, including the biological and physiological changes that lead to signs and symptoms of illnesses. By examining these functional changes, healthcare professionals can gain insights into the progression of diseases, the impact on various body systems, and the underlying mechanisms that drive these processes.

This understanding is crucial for developing effective treatment strategies and interventions. In contrast, the other definitions provided in the choices focus on different aspects of the biological sciences—such as the study of healthy physiological processes, anatomical structures, or pharmacological effects—none of which encapsulate the specific focus of pathophysiology on disease-related changes.