Pharmacology · single question

What is the primary psychoactive component of cannabis?

  1. Cannabidiol (CBD)
  2. Delta-9-tetrahydrocannabinol (delta-9-THC)
  3. Tetrahydrocannabivarin (THCV)
  4. Cannabinol (CBN)
Show answer and explanation

Correct answer: B. Delta-9-tetrahydrocannabinol (delta-9-THC)

  • A. Incorrect. CBD is a major non-psychoactive component. It does not produce intoxicating effects and is used for anxiolytic and anti-seizure purposes.
  • B. CORRECT. Delta-9-tetrahydrocannabinol (delta-9-THC) is the principal psychoactive component of cannabis. It binds to CB1 receptors in the brain (particularly in the hippocampus, basal ganglia, and cerebellum) to produce euphoric, analgesic, and psychoactive effects.
  • C. Incorrect. THCV is a minor cannabinoid with pharmacological properties distinct from delta-9-THC.
  • D. Incorrect. CBN is a minor cannabinoid with weak psychoactive properties, formed from THC degradation over time.

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