Norepinephrine release from nicotine contributes to which effect?

Norepinephrine release from nicotine contributes to which effect?

• A. Alertness
• B. Weight gain
• C. Drowsiness
• D. Decreased blood pressure

Answer: (A)

Norepinephrine release from nicotine contributes to increased alertness. Nicotine activates brain nicotinic receptors, which stimulates release of norepinephrine in arousal pathways such as the locus coeruleus. This surge boosts attention, vigilance, and wakefulness, which is experienced as being more alert after nicotine use. Weight changes aren’t driven by this acute norepinephrine release; nicotine can influence appetite in other ways and weight trends are more about long-term patterns and cessation. Drowsiness would be at odds with the arousal effect, and decreased blood pressure doesn’t fit because norepinephrine generally increases sympathetic activity and raises blood pressure.

Norepinephrine release from nicotine contributes to increased alertness. Nicotine activates brain nicotinic receptors, which stimulates release of norepinephrine in arousal pathways such as the locus coeruleus. This surge boosts attention, vigilance, and wakefulness, which is experienced as being more alert after nicotine use.

Weight changes aren’t driven by this acute norepinephrine release; nicotine can influence appetite in other ways and weight trends are more about long-term patterns and cessation. Drowsiness would be at odds with the arousal effect, and decreased blood pressure doesn’t fit because norepinephrine generally increases sympathetic activity and raises blood pressure.