What is physiology the study of?

Physiology is fundamentally the study of the functions of body parts and how they work together to maintain life. It encompasses how organs, tissues, and cells interact and respond to various stimuli, which is crucial for understanding how the body operates in both health and disease. By examining the mechanisms of bodily functions, physiology provides insights into processes such as respiration, circulation, digestion, and metabolism.

This focus on functioning is what sets physiology apart from other fields like anatomy, which deals specifically with the structure of the body, or pathology, which examines diseases and their effects on bodily functions. Understanding physiology is essential for medical professionals, especially combat medics, as it allows them to assess and respond effectively to medical situations by recognizing how normal functions can be disrupted by injuries or illness.