National Certified Addiction Counselor, Level 2 (NCAC II) Practice Exam Exam

What is the primary effect of stimulants on the body?

1. They depress neural activity

2. They alter mood and perception

3. They excite neural activity and speed up body functions

4. They relax muscles and induce sleep

The correct answer is: They excite neural activity and speed up body functions

Stimulants are substances that primarily increase the activity of the central nervous system, which leads to heightened alertness, attention, and energy levels. They work by enhancing the release of neurotransmitters such as dopamine and norepinephrine, which can result in faster heart rates, increased blood pressure, and a boost in overall physical and mental functions. This stimulating effect contrasts sharply with depressants, which slow down brain function and bodily processes. Additionally, while some stimulants may have mood-altering effects, their defining characteristic is the excitation of neural activity and the acceleration of body functions, which is precisely why this choice is the correct answer.