What is the primary mechanism for maintaining homeostasis?

Question

BlackTom AI · Accepted Answer

The prompt asks about the primary mechanism for maintaining homeostasis, so we start by framing the question and listing the options clearly.
Option a: inherent control. This term is not standard in physiology for homeostasis; while systems can be intrinsic to organs, the phrase as stated does not capture the classic mechanism by which stable internal conditions are maintained.
Option b: extrinsic control. Extrinsic control refers to regulation by external factors or systems (e.g., nervous or endocrine inputs from outside a given organ). While important, extrinsic control often acts through feedback mechanisms rather than being the fundamental 'primary' method itself.
Option c: positive feedback. Positive feedback amplifies changes rather than stabilizing them, which tends to move systems away from a set point. It is involved in specific processes (like blood clotting or childbirth) but not in the general maintenance of steady state.
Option d: intrinsic control. Intrinsic control describes local regulation within an organ or tissue, contributing to homeostasis, but the question asks for the overall primary mechanism, which is typically described in the broader framework of feedback systems rather than a single local mechanism.
Option e: negative feedback. This is the classic mechanism by which most homeostatic processes regulate variables (such as temperature, pH, and glucose). A deviation from a set point triggers responses that oppose the change, restoring balance and keeping internal conditions within normal limits.
In terms of the underlying concept, think about how a system detects a deviation and then initiates responses that counteract that deviation: that is the essence of negative feedback. The other options either describe non-stabilizing processes (positive feedback), are ambiguous or less central descriptors (inherent/extrinsic/intrinsic control as standalone labels), or don’t capture the dominant mechanism by which homeostasis is maintained across physiological systems.
Thus, the reasoning for each option centers on whether it aligns with stabilizing the internal environment, with negative feedback aligning most closely to that stabilizing role and the general definition of homeostasis.

My LMS Subjects Practice test (Foundation of Human physiology))

What is the primary mechanism for maintaining homeostasis?

查看解析

登录即可查看完整答案

类似问题

"Set points" in our body ______________________________.

Question at position 10 Which of the following best describes homeostasis?1:1 ratio of food to waterHealthful body balanceCell reproductionOverconsumption of electrolytes

Question at position 16 How do feedback systems in the body relate to aqueous solutions?They produce solid minerals for bonesThey prevent water from entering cellsThey continuously adjust the concentrations of solutes in these solutionsThey regulate DNA replication in cells

Metabolic homeostasis corresponds to chemical equilibrium

What feedback reverses a change in the body’s physiological condition so the system returns to the normal range?

Trauma, sleep deprivation, pain and infection are examples of threats to homeostasis that are generally referred to as .

Which two (2) systems of the body are mainly involved in maintaining homeostasis and communication?

Homeostasis is the maintenance of a _____ internal environment;

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单