The ergogenic effect of caffeine appears to be due to inhibition of the central nervous system. increased calcium stored in the sarcoplasmic reticulum. increased glycogen stored in the liver. an increase in free fatty acids for fuel use.

Caffeine influences the monamine systems as strongly as cocaine and amphetamines.Group of answer choicesTrueFalseNo answer text provided.No answer text provided.

hich of the following is true of the effect of caffeine on the nervous system?Multiple ChoiceIt increases relaxation.It increases attentiveness.It causes a drop in heart rate.It increases reaction time.

Which direct effect of caffeine is most dangerous when consumed in amounts greater than recommended especially for individuals who are not typically active and/or are not "trained"?Group of answer choicesIncrease in anxiety and insomnia.Increase in urine and acid production.Increased risk of dehydration because caffeine is a diuretic.None of these are dangerous as they are all normal effects of a central nervous system stimulant.Increase in heart rate.

How does caffeine work at the neuronal level and why does it stop us feeling sleepy?

When a person ingests caffeine, whether in the form of a cup of coffee or tea, a caffeinated soft drink or even a piece of dark chocolate, the drug begins to take effect almost immediately. First, caffeine enters the bloodstream through the membranes of the stomach and small intestine. It is then metabolised by the liver, which breaks it down into other chemicals. Within fifteen minutes of consumption, most people begin to feel the effects of caffeine, which can include increased heart rate and feelings of alertness or well-being. Within six hours of consumption, about half of the original dose of the drug will have been eliminated from the body. This is why some people drink a second cup of coffee in the afternoon.Which organisational structure does this text primarily use?