Question

complete the statements.
negative feedback loops. these loops do this by a stimulus.
positive feedback loops drive physiological processes to completion return a system to a steady state
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Explanation:

Negative feedback loops are designed to maintain homeostasis in the body. Homeostasis is the stable internal environment of the body. When a change (stimulus) occurs in the body, negative feedback loops work to counter - act that change. For example, if body temperature rises (stimulus), negative feedback mechanisms (like sweating) work to lower the temperature and return the body to its normal (steady) state.

Positive feedback loops, on the other hand, are not about maintaining a steady state. They are about driving a physiological process to completion. An example is the process of childbirth. The initial contractions (stimulus) lead to the release of hormones that cause more intense contractions, driving the process of childbirth to its end (completion).

Answer:

Negative feedback loops: return a system to a steady state. These loops do this by counter - acting a stimulus.
Positive feedback loops: drive physiological processes to completion.