Question

Tobacco is classified as a(n) ______ because it excites central nervous system receptors and activates them to release adrenaline, which raises blood pressure, speed up the heartbeat, and gives the user a temporary sense of alertness.

Option 1: Depressant
Option 2: Stimulant
Option 3: Hallucinogen
Option 4: Analgesic

Answer 1

Tobacco is classified as a stimulant because it excites central nervous system receptors, raises blood pressure, and speeds up the heartbeat. Nicotine, the active chemical in tobacco, interacts with acetylcholine receptors and stimulates dopaminergic neurons, leading to addiction and dependence.

Step-by-step explanation:

Tobacco is classified as a stimulant because it excites central nervous system receptors and activates them to release adrenaline, which raises blood pressure, speeds up the heartbeat, and gives the user a temporary sense of alertness. Nicotine, the active chemical constituent in tobacco, interacts with acetylcholine receptors in the brain and stimulates the activity of dopaminergic neurons in the midbrain reward system. This results in the addictive and dependence-forming properties of nicotine.