What is the role of the sympathetic nervous system in the neuroanatomy of neurogenic bladder?

Updated: Dec 06, 2018
  • Author: Bradley C Gill, MD, MS; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

Answer

When the sympathetic nervous system is active, it causes the bladder to increase its capacity without increasing detrusor resting pressure (accommodation) and stimulates the internal urinary sphincter to remain tightly closed. The sympathetic activity also inhibits parasympathetic stimulation, preventing bladder contractions. When the sympathetic nervous system is active, urinary accommodation occurs and the micturition reflex is suppressed.


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