MRCP UK EXAMINATIONS

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: -The four components of a negative feedback loop are: stimulus, sensor, control center, and effector.

Detailed explanation-3: -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-4: -: feedback that tends to magnify a process or increase its output.

Detailed explanation-5: -In a positive feedback mechanism, the output of the system stimulates the system in such a way as to further increase the output.