7.2.marijuana

7.2.marijuana - Cannabis: Three Species Marijuana Cannabis:...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Marijuana Cannabis : The Plant ! Marijuana is a preparation of leafy material from the Cannabis plant that is smoked ! Effects it produces in most users are sufFciently different from the effects of depressants, narcotics, and hallucinogens to merit its separate classiFcation Cannabis : Three Species 1. Cannabis sativa 2. Cannabis indica 3. Cannabis ruderalis Cannabis Resin ! Primary psychoactive agent in Cannabis is delta-9-tetrahydrocannabinol (THC) ! THC is concentrated in the resin, most of which is in the ±owering tops ! Less in the leaves ! Little in the Fbrous stalks
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Hashish ! Consists of pure resin that has been carefully removed from the surface of leaves and stems Sinsemilla ! Consists of dried Fowering tops of plants with pistillate Fowers (female plants) ! Male plants are removed from the ±elds before the female plants are pollinated ! Average THC content of U.S. sinsemilla samples is about _____________ Bhang ! Consists of the remainder of the Cannabis plant after the top has been picked ! Rare in the U.S. ! Average THC content of less than 1 percent Smokable Marijuana Available in the U.S. ! Potency varies widely ! Typical range of potency is 2 to 8 percent THC ! Proportion of con±scated marijuana samples of higher-potency has increased since the 1980s ! Still only about 15 percent
Background image of page 2
Marijuana History ! Early 1900s: Little public interest or use ! 1926: Series of newspaper articles linked marijuana and crime ! 1936: All states had laws regulating the use, sale, and/or possession of marijuana ! Most early regulation efforts: based on concerns about use and resultant behavior Prop 19 53.8% "No" and 46.2% voted "Yes" Supporters and Opponents arguments Pharmacology: Cannabinoid Chemicals ! Chemistry of Cannabis is complex and unique ! Cannabinoids are 66 chemicals unique to the Cannabis plant ! Delta-9-tetrahydrocannabinol (THC) ! There may be several other active agents in Cannabis Pharmacology ! Smoked marijuana
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/05/2011 for the course PSYC 179 taught by Professor Koob during the Summer '08 term at UCSD.

Page1 / 9

7.2.marijuana - Cannabis: Three Species Marijuana Cannabis:...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online