Transcript Caffeine works by blocking adenosine action

Catalyst 5/12/14
Write down and answer the
following question on your Catalyst
sheet:
What is the main difference
between barbiturates and
benzodiazepines?
Caffeine
5/12/14
How much do you know
about caffeine?
 TRUE OR FALSE:
 1. Caffeine isn’t addictive
 2. Caffeine is not as dangerous as other drugs
 3. Caffeine is the most widely consumed
psychoactive drug in the world
 4. A can of Coke has more caffeine than a cup
of coffee
 5. Caffeine makes you pee more
Answers
 1. False
 2. True
 3. True
 4. False
 5. True
Caffeine
 Stimulant
 Temporarily increases physical and mental functions
 Legal & found in a wide variety of products
 Soft drinks
 Coffee
 Tea
 Chocolate
 Most popular drug on the planet!
 120,000 tons consumed per year
Sources of Caffeine
 Coffee beans
 Kola nuts (cola)
 Cocoa beans (chocolate)
 Guarana (energy drinks)
Effects of Caffeine
 Increased alertness
 Increased focus
 Improved physical performance
 Increased urinary output (you pee more)
 Anxiety (“the jitters”)
 Caffeinism = caffeine addiction
 Nervousness, irritability, restlessness, headaches
How Caffeine Works
 There is a chemical called adenosine that is
made naturally in the body
 Adenosine suppresses brain & nerve activity and
blocks release of certain neurotransmitters
 Caffeine works by blocking adenosine action
 When caffeine blocks adenosine, there is more
release of neurotransmitters, leading to
stimulating effects
Mini-Lab: Caffeine &
Memory
 We just talked about how caffeine improves
brain activity and focus…
 Does it also improve memory?
Mini-Lab: Caffeine &
Memory
 The class will be split into two groups: Group A
and Group B
 Both groups will perform Memory Test 1 at the
same time
 Remember and write down as many numbers as you
can after looking at the numbers for 30 seconds
 One group will drink soda that is caffeinated, the
other group will drink soda without caffeine
 Both groups will perform Memory Test 2 at the
same time
Caffeine Video
Post-Lab Reflection
Questions
 Why was the name of the soda hidden from
you during the experiment?
 Was there a placebo effect? How do you
know?
 Placebo effect = effect that is observed even
without the actual drug
 What would you do differently next time for
better results?
10.6 Cocaine
5/12/14
Cocaine
 Stimulant
 Temporarily increases physical and mental functions
 Increases alertness, feelings of well-being, energy, and activity
 Increases anxiety, paranoia, and restlessness
 Comes from the coca plant
History of Cocaine
 South American indigenous peoples have
chewed coca leaves for over a thousand years
 Late 1800s - Used as a painkiller medicine
 1980s - Crack cocaine sold by drug dealers and
became popular in Los Angeles, leading to the
crack epidemic
 Crack cocaine is a cheaper, smokeable
form of cocaine
Coca-Cola ad
(1902)
Drugs, Inc.: Cocaine
 Follow along with the documentary and answer
the questions in your notes
Achieve3000 Time!
 Go to www.achieve3000.com on your iPads
 Go to Mailbox, then click on “5/12/14
Assignment: Mind-Bending Technology”
 Do the following:
 Before Reading Poll
 Article
 Activity
 After Reading Poll