Which term is the study of the function of organs and body systems?

• A. Anatomy
• B. Physiology
• C. Gross Anatomy
• D. Histology

Answer: (B)

Physiology is the study of how the body functions—how organs and systems work together, regulate one another, and maintain life. It explores the mechanisms behind processes like the heart pumping blood, lungs exchanging gases, kidneys filtering blood and balancing fluids, and nerves and hormones coordinating activities. The other terms focus on structure rather than function: anatomy looks at shapes and locations of parts, gross anatomy studies what you can see without a microscope, and histology examines tissues under a microscope. Since this question concentrates on how the body works, physiology is the best fit.