The digestive system does not contain the following structure

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.

The breakdown of peptides into amino acids is an example of . the release of insulin after eating a large meal is an example of .

Which method of administration would result in the highest concentration of the drug in the brain?