The four components of a negative feedback loop are: stimulus, sensor, control center, and effector. If too great a quantity of the chemical were excreted, sensors would activate a control center, which would in turn activate an effector.
<h3>What are sensors ?</h3>
A sensor is an apparatus that generates an output signal to sense a physical occurrence.
A sensor is, in the broadest sense, a device, module, machine, or subsystem that recognizes events or changes in its surroundings and transmits the data to other electronics, typically a computer processor. Always utilize sensors in conjunction with other electronics.
Sensors are employed in several applications that most people are unaware of, like touch-sensitive elevator buttons (a tactile sensor) and lamps that can be dimmed or brightened by touching the base. The uses of sensors have expanded beyond the conventional disciplines of temperature, pressure, and flow measurement, for example into MARG sensors, thanks to advancements in micromachinery and user-friendly microcontroller platforms.
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