__________ is when the body systems are functioning normally.

• A. Equilibrium
• B. Normal Functioning
• C. Homeostatic Balance
• D. Homeostasis

Answer: (D)

Maintaining stable internal conditions despite changes in the external environment is what homeostasis means. When the body’s systems are functioning normally, regulatory mechanisms work to keep variables like temperature, pH, fluids, and energy balance within tight ranges, so processes operate smoothly. This stability is achieved mainly through feedback systems that correct deviations from set points, especially negative feedback. While equilibrium describes a general sense of balance, and normal functioning is a broad description, homeostasis is the precise term for the ongoing regulation that keeps the body operating within its healthy limits. The term homeostatic balance conveys a similar idea, but the standard, widely used term is homeostasis.