HUMAN NUTRITION

Detailed explanation-1: -In positive feedback mechanisms, the original stimulus is promoted rather than negated. Positive feedback increases the deviation from an ideal normal value.

Detailed explanation-2: -In a feedback loop, a stimulus causes a change in homeostasis, and a sensor detects that change. The control center responds to the sensor and takes action, such as producing a hormone. The effector organs are the target of the feedback loop and respond to the stimulus.

Detailed explanation-3: -: feedback that tends to magnify a process or increase its output.

Detailed explanation-4: -Positive feedback enhances or accelerates output created by an activated stimulus. Platelet aggregation and accumulation in response to injury is an example of positive feedback. Negative feedback brings a system back to its level of normal functioning.