Question

If a person steps on a sharp object, it is detected in the foot by a __________ and a message is fired off to the central nervous system.

Answer 1

Answer:

stimulus us the answer

Explanation:

stimulus is the reaction to some conditions in our environment by our body

pls mark as brainliest

pls follow

hope it helps

Answer 2

The answer is 'a receptor or a neuron'...

A receptor or a neuron detects the stimuli and fires a message to the central nervous system