Which of the following is the central premise of homeostasis in the human body?

• A. The body relies on conscious control to regulate internal processes.
• B. The body continuously adapts to new environments by changing its internal conditions.
• C. The body prioritizes energy conservation over maintaining internal balance.
• D. The body maintains a stable internal environment despite external changes.

Answer: (D)

Verified step by step guidance

1. Understand the concept of homeostasis: Homeostasis refers to the body's ability to maintain a stable internal environment despite changes in external conditions.
2. Identify the key components of homeostasis: These include sensors that detect changes, control centers that process this information, and effectors that enact changes to return the body to its set point.
3. Recognize the role of feedback mechanisms: Homeostasis often involves negative feedback loops, where a change in a physiological variable triggers a response that counteracts the initial change.
4. Consider examples of homeostasis: Examples include regulation of body temperature, blood pH, and glucose levels, all of which are maintained within narrow limits.
5. Evaluate the options given: The correct premise of homeostasis is that the body maintains a stable internal environment despite external changes, which aligns with the definition and mechanisms of homeostasis.