Um this is not fake so rate it

How does heroin affect cellular communication in the brain?

What effect do stimulants, such as cocaine, have on the nervous system? o a. stimulants change the activity of neurotransmitters. o b. stimulants mimic hormones and influence moods. o o c. stimulant|mchange how sensory information is processed. d. stimulants decrease brain activity.

Mini dentist offices prefer preset trays because the use of these trays