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Marijuana Update

1. The main psychoactive chemical in marijuana, responsible for most of the intoxicating effects that people seek, is:

A. Cannabidiol

B. Cannabichromene

C. Delta-9-tetrahydrocannabinol

D. Delta-8-tetrahydrocannabinol


2. Eating or drinking marijuana delivers significantly more THC into the bloodstream than smoking an equivalent amount of the plant.

A. True

B. False


3. People who have taken large doses of marijuana may experience an acute psychosis, which includes all of the following, except:

A. Schizophrenia

B. Hallucinations

C. Delusions

D. Loss of the sense of personal identity


4. THC’s chemical structure is similar to the brain chemical:

A. Dopamine

B. Anandamide

C. Norepinephrine

D. THC’s chemical structure is not similar to a chemical found in the brain


5. Marijuana significantly impairs judgment, motor coordination, and reaction time, and studies have found a direct relationship between blood THC concentration and impaired driving ability.

A. True

B. False


6. People who begin using marijuana before the age of _____ are four to seven times more likely to develop a marijuana use disorder than adults.

A. 10

B. 12

C. 15

D. 18


7. Persistent marijuana use disorder with frequent use starting in _____ has been found to be associated with a loss of IQ points.

A. Adolescence

B. Adulthood

C. Both adolescence and adulthood

D. Neither adolescence nor adulthood


8. Chronic THC exposure may hasten age-related loss of hippocampal neurons which decreases their ability to learn new information.

A. True

B. False


9. The strongest evidence to date concerns links between marijuana use and substance use disorders and between marijuana use and psychiatric disorders depends on:

A. The amount of drug used.

B. The age at first use.

C. If the drug is used in combination with any other substance.

D. A preexisting genetic or other vulnerability.


10. A large AIDS cohort study found that because of THC’s immune-suppressing effects, smoking marijuana increases susceptibility to lung infections, such as pneumonia, in people with immune deficiencies.

A. True

B. False


11. Cell culture and animal studies have suggested THC and CBD may have antitumor effects, and this has been proposed as one reason why stronger expected associations are not seen between marijuana use and lung cancer.

A. True

B. False


12. Limited evidence suggests that a person’s risk of heart attack during the first hour after smoking marijuana is nearly five times his or her usual risk.

A. True

B. False


13. Detailed analysis has shown that legally protected access to medical marijuana dispensaries is associated with:

A. Lower levels of opioid prescribing.

B. Lower treatment admissions for prescription opioid use disorders.

C. Reductions in prescription opioid overdose deaths.

D. Legally protected access to medical marijuana dispensaries is associated with lower levels of opioid prescribing, lower treatment admissions for prescription opioid use disorders, and reductions in prescription opioid overdose deaths.


14. After researchers measured the amount of THC in the blood of people who do not smoke marijuana but had spent 3 hours in a well-ventilated space with people casually smoking marijuana, THC was found to be present in the blood of the nonsmoking participants at a level high enough to fail a drug test.

A. True

B. False


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