Physiology is described as the study of which?

• A. Anatomy
• B. Diseases
• C. Brain function
• D. Functioning of body parts

Answer: (D)

Physiology studies how the body functions—the processes that keep it alive and working. It explains how organs and systems perform their tasks and interact, like how the heart pumps blood, how lungs exchange oxygen and carbon dioxide, how muscles move, and how nerves coordinate actions and responses. This focus on dynamic processes and mechanisms distinguishes physiology from anatomy, which is about the body's physical structure. Diseases describe diseased states, not normal function, and while brain function is part of physiology, the field as a whole covers the functioning of all body parts. So describing physiology as the functioning of body parts is the best fit.