2007-02-04 01:58:11 · 2 answers · asked by lalala 1 in Science & Mathematics ➔ Biology
what wouild happen to body systems during a stressful situation if these characteristics were reversed?
2007-02-04 02:06:39 · update #1
Part of the reason why sympathetic is so diffuse is because it occupies a much larger part of the spinal cord than the parasympathetic. Therefore, sympathetic affects more of the body. Another reason is that cortisol is a steroid hormone, which stays in your body for a long time. Finally, evolution would have favored responses that allowed us to respond to stress better, so sympathetic actions would tend to be more prominent.
2007-02-04 02:31:23 · answer #1 · answered by Niotulove 6 · 0⤊ 0⤋
Possibly because acetylcholinesterase is amazingly rapid in its activity of breaking down acetylcholine, which is the primary mediator of the parasympathetic system
2007-02-04 10:03:10 · answer #2 · answered by citizen insane 5 · 0⤊ 0⤋