Blushing - Biology Forum

last updated by

Navin 18 years, 5 months ago

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- July 26, 2006 at 10:02 am #5324
  kimmie
  Participant
  i got this question in class today and i have no idea what the answer is
  is says " describe the changes in physiology when we blush and when we go pale (faint)"
  if anyone knows any biological answer to this question please notify me immediately
- July 26, 2006 at 11:49 am #52152
  kiekyon
  Participant
  Blushing is a physical condition caused by over-activity in the so-called sympathetic nervous system, a system made up of nerves over which we have no control. These uncontrollable nerves may become especially active due to social and emotional stimuli and may be very embarrassing.
  Turning pale on the other hand is the response of the parasympthetic
  nervous system. It responds just oppositely of the sympathetic system.
- July 26, 2006 at 7:27 pm #52174
  MrMistery
  Participant
  the direct effect occurs because of widening or tightning of blood vessels beneath the skin
- July 27, 2006 at 8:09 am #52213
  Navin
  Participant
  aka ateriole dilation (for blushing) or constriction (for going pale).
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