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Caffeine Case Study

AP Biology

Angela Carrington

on 31 May 2013

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Transcript of Caffeine Case Study

How Does Coffee affect the brain and body:) How Does Coffee affect the brain and body:) By: Danielle Franklin and Angela Carrington The advice that I would give Ashley would be to stay away from large amounts of caffeine because the side effects like withdraws is hard to separate from. Statistics:
In the U.S., 80 percent of adults consume caffeine every day
the average adult intakes 200 mg per day
about the same amount as two 5-ounce cups of coffee or four sodas.
Caffeine intake for teenagers averages to 53 mg of caffeine per day,
but almost one in five students took in more than 100mg of caffeine each day. Adenosine:
A compound consisting of adenine combined with ribose, one of four nucleoside units in RNA.
In the body, adenosine helps in cellular energy transfer by forming molecules like adenosine triphosphate (ATP) and adenosine diphosphate (ADP). How it affects your sleep:
Caffeine closes the blood vessels in the brain enabling the brain and body not to sleep.
It causes the release of adrenaline into the human body so that the body remains alert and active. Membrane receptors:
A synaptic action must be identified for the substance, and local application must produce effects "exactly" like those of synaptically released transmitter substance.
It is through dendrites and their synapses that neurons communicate with each other and form large connected networks of neurons. Caffeine effects the body:
Bad affects: caffeine makes your body jittery, it raises your blood pressure, causes headaches, makes you dehydrated, and it makes it hard to fall asleep.
Good affects: increases attention levels and memory performance, also decreases chances of getting liver disease. CNS:
Stimulants are drugs that stimulate the Central Nervous System. These substances tend to increase alertness and physical activity. Since caffeine is intended to make people alert then it's know as a drug that stimulates the Central Nervous System. Other stimulates:
Amphetamines, Cocaine, Crack and some inhalants like Amyl or Butyl Nitrites. Caffeine (present in tea, coffee and many soft drinks) is also a mild stimulant drug. Does caffeine affect other organ systems besides the nervous system?
Caffeine affects other body organ systems like Gastrointestinal Tract, Cardiovascular System, and Urinary Tract. With the gastrointestinal tract caffeine causes more urgent and frequent bowel movements. In the cardiovascular system caffeine causes the heart to beat faster and also have high blood pressure. Caffeine causes an increase of urination in the urinary tract. Caffeine in coffee, tea, and soda:
Each cup of coffee can have between 65mg to 115mg of caffeine. A cup of tea usually has about 60mg of caffeine in it and a soft drink contains between 30mg and 60mg of caffeine.
Too much caffeine can cause anxiousness, headaches, the 'jitters' and may prevent sleep. Caffeine is also addictive and a person who suddenly stops drinking coffee may experience withdrawal symptoms. The hippocampus deals with short and long term memory and learning. Segal and Korkotian chose this part of the brain for their study of the effects of caffeine because they wanted to see how caffeine affects the memory and learning process. Thank You :)
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