Presentation on theme: "How Caffeine is Processed by the Body Where Found Caffeine occurs naturally in the leaves, seeds and fruits of many plant species. Caffeine is common in."— Presentation transcript:
How Caffeine is Processed by the Body Where Found Caffeine occurs naturally in the leaves, seeds and fruits of many plant species. Caffeine is common in foods such as coffee, soft drinks, teas, chocolate, and in over-the-counter. It is also an ingredient in pain reliving medications.
Typical Doses of Caffeine Typical drip coffee contains 100 mg per 6-ounce cup. Tea contains 70 mg per 6- ounce cup. Colas (coke, Pepsi, mountain dew, etc.) Contain 50 mg per 12-ounce can. Chocolate contains 6 mg per ounce. Pain reliving medications: Anacin 32mg Excedrin 65mg People’s Physiology are different. A safe level of caffeine consumption for a health adult is around 300 milligrams per day.
Caffeine Transmission Caffeine is almost always taken by mouth so it is absorbed quickly and completely into the blood stream. Within minutes after consumption the blood stream carries caffeine to all of the bodies organs and to almost to every cell in the body. Peak blood plasma levels of caffeine are reached within about 30 minutes after ingesting coffee and an hour after ingesting soft drinks
Half-Life Half-Life is the amount of time it takes for one-half of an drug to be processed through the Body. Caffeine’s Half-Life is About 6 hours. That means that if you consume a cup of coffee with 200 mg of caffeine in it at 3:00 PM, by 9:00 PM about 100 mg of that caffeine is still in your system.
Physiological Adaptations Dilates systemic blood vessels, but constricts blood vessels inside the brain. & Caffeine is a Cardiac Muscle Stimulate & a Smooth Muscle Relaxant
Adenosine in the Brain in the brain neurons are transmitting electrical energy. when activity is too high adenosine molecules stop the neuron cells from firing. Caffeine blocks adenosine receptors with its own molecule preventing the adenosine molecule from binding. brain activity remains at its excited state and can even increase in activity because adenosine is unable to slow it down.
Caffeine and Adrenaline The pituitary gland recognizes all of the neural activity and thinks some sort of emergency must be occurring, so it releases hormones that tell the adrenal glands to produce adrenaline (epinephrine).
Effects of Increased Adrenaline Pupils dilate Breathing tubes to open up Heart to beat faster Blood flow to the stomach slows The liver releases sugar into the bloodstream for extra energy
Withdrawal Symptoms Vomiting Headache An Increase in Heart Rate Anxiety Difficulty Sleeping
The Caffeine Withdrawal Headache Consumption of caffeine causes the blood vessels in the head to constrict Once caffeine is processed these same blood vessels hyper-dilate. The hyper-dilation in the brain causes a withdrawal headache
Caffeine is a Diuretic adenosine receptors function in the kidneys to control blood flow and to control the amount of urine excreted into the bladder. When caffeine blocks adenosine receptors, the blood vessels in the kidney dilate, and more urine is produced.
Caffeine is a Laxative The colon like the kidney’s have adenosine receptors that control the relaxation and contraction of smooth muscle. Caffeine blocks the message that tells the muscles to relax Smooth muscles in the colon contract more easily allowing material to be pushed down the digestive tract freely.
Caffeine Addiction Many people enjoy the effects such as the feeling of alertness and euphoria caffeine produce. Which can lead to Dependence or Addiction. The feelings are caused by caffeine’s ability to manipulate the dopamine levels in the brain.
Caffeine and Dopamine When caffeine or any stimulant, is present in the synapse of the brain. It binds to the uptake pumps and prevents them from removing dopamine. This results in a increased level of dopamine in the synapses. Cocaine Effect Dopamine the Same Way As Caffeine
Conclusions Whatever function the binding of adenosine had, caffeine inhibits that function! Blocks Adenosine Receptor Sites Increases Adrenaline Levels Manipulates the Levels of Dopamine