Respuesta :
A negative feedback loop has four parts: a stimulus, a sensor, a control point, and an effector. Sensors would activate a control center, which in turn would activate an effector, if an excessive amount of the chemical was expelled.
What are sensors ?
A sensor is a device that produces an output signal to detect an actual event.
In its broadest meaning, a sensor is any apparatus that detects events or changes in its environment and conveys the information to other electronics, most often a computer processor. Use sensors along with other electronics at all times.
Most people are unaware of the numerous applications for sensors, such as touch-sensitive elevator buttons (a tactile sensor) and lamps that can change in brightness or dimness by only touching the base. Due to developments in micromachinery and user-friendly microcontroller platforms, the uses of sensors have moved beyond the traditional disciplines of temperature, pressure, and flow measurement, for example into MARG sensors.
To learn more about sensors from the given link:
brainly.com/question/26320121
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