Stress and adrenaline
Name: Kristine E Cappetta
When a person is under stress, adrenaline causes more blood to flow to the
brain and muscles. How do you think these changes help the body deal with stress?
Stress, in evolution, meant threat to life. The best response is to run
away or fight, both of which require brain and muscles. Adrenaline also directs
blood away from the intestines and skin, because there isn't enough total blood
in the body to fill all the vessels at once, so if you're going to send more blood
somewhere, you've got to take it away from somewhere else. What are the results
of taking blood away from the guts and skin. Cold sweat for the skin and what
about the gut. Well what is the expression: "to scare the ____out of someone!"
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Update: June 2012