Site author Richard Steane
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The BioTopics website gives access to interactive resource material, developed to support the
learning and teaching of Biology at a variety of levels.
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Physiological effects of adrenalin | causing the following effects on the body to be observed |
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quickens heart beat | chest/heart thumping - pulse racing |
diverts blood to muscles,
away from alimentary canal and possibly skin |
ready to react physically (fight/flight)
hollow feeling /"butterflies" in stomach - turning pale |
dilates airways, increases breathing rate | more air allowed into lungs / deeper breathing /faster breathing! |
increases rate of oxidation of carbohydrates |
greater energy for activity |
consequently, more blood with extra oxygen and glucose flows to muscles and brain |
speed and power of reactions to events boosted - clearer thinking? - insensitive to pain? |