Answer: Acetylcholine. The axons of a motor neuron release the said neurotransmitter which generates an impulse to contract a muscle. It is an organic chemical that functions in the brain and body of organisms.
I think the answer is D not positive tho
Answer:
B.
Explanation:
I think it's because protons are the ones that circle, neutrons stay in the middle becuz they're neutral, and electron are negatively charged?
Should be A.! i hope this helped
