Which term describes the immediate maintenance of physiological balance, as opposed to longer-term adjustments?

Which term describes the immediate maintenance of physiological balance, as opposed to longer-term adjustments?

• A. Linked Lives
• B. Allostasis
• C. Homeostasis
• D. Choice Overload

Answer: (C)

The immediate maintenance of physiological balance is homeostasis. This concept means keeping the body's internal environment steady and within a narrow range in the moment, using rapid regulatory processes. When something shifts—temperature rises, pH changes, or blood glucose fluctuates— Sensors detect the change and effectors act quickly to restore balance, often through negative feedback loops. For example, when you get hot, mechanisms like sweating and vasodilation kick in to cool you down, and when blood glucose rises after a meal, insulin helps bring it back toward normal levels. This is about moment-to-moment stability of internal conditions, rather than longer-term adaptation. Allostasis, by contrast, describes how the body adjusts its regulatory priorities over time in response to chronic stress or changing demands, which can involve shifting set points and coordinating responses across multiple systems. Choices that refer to social relationships or cognitive overload aren’t related to physiological regulation, so they don’t fit the concept being tested.

The immediate maintenance of physiological balance is homeostasis. This concept means keeping the body's internal environment steady and within a narrow range in the moment, using rapid regulatory processes. When something shifts—temperature rises, pH changes, or blood glucose fluctuates— Sensors detect the change and effectors act quickly to restore balance, often through negative feedback loops. For example, when you get hot, mechanisms like sweating and vasodilation kick in to cool you down, and when blood glucose rises after a meal, insulin helps bring it back toward normal levels. This is about moment-to-moment stability of internal conditions, rather than longer-term adaptation.

Allostasis, by contrast, describes how the body adjusts its regulatory priorities over time in response to chronic stress or changing demands, which can involve shifting set points and coordinating responses across multiple systems. Choices that refer to social relationships or cognitive overload aren’t related to physiological regulation, so they don’t fit the concept being tested.