rayauds

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Issue:

Science

 

Written by:

John F

 

Date added:

April 5, 2014

 

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Grade:

A

 

No of pages / words:

7 / 1797

 

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5298 times

 

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Essay content:

Other digits that may be affected include toes, nose, and ear lobes. Exposure to cold and emotional stress triggers the vasoconstriction of the digits. It was originally described by the Catholic, French physician Maurice Raynaud in 1862. In this condition, the vasospastic response is more frequently induced by exposure to cold temperatures and is often accompanied by digital color changes...
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In this condition, the vasospastic response is more frequently induced by exposure to cold temperatures and is often accompanied by digital color changes. After onset, a tri-color change [blanching (white), cyanosis (blue), and reactive hyperemia (red)] occurs. "Pallor (blanching) shows vasospasm and loss of arterial blood flow, cyanosis shows the deoxygenation of static venous blood, and rubor (red) shows reactive hyperemia following return of blood flow...
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