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

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What is a common physiological effect of stimulant use?

Increased sleepiness
Irregular heartbeat
Loss of coordination
Amnesia

The correct answer is: Irregular heartbeat

Stimulant use commonly leads to an increased level of arousal and alertness, which is a characteristic effect of these substances. One significant physiological effect is the modulation of heart rate. Stimulants typically cause the heart to beat faster or irregularly, which can put additional strain on the cardiovascular system. This irregular heartbeat, often referred to as tachycardia, is a result of increased sympathetic nervous system activity, which stimulates various bodily functions in response to perceived stress or increased energy needs. The other effects mentioned, such as increased sleepiness, loss of coordination, and amnesia, are not typical of stimulants and are more associated with depressant substances or certain mental health conditions rather than the stimulating effects that elevate energy and alertness.