05-12-2014, 05:33 AM
what does prevent retrograde ejaculation of semen into the bladder?
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q#5 - verymotivatedlearner
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05-12-2014, 06:32 AM
 yes - contraction of internal sphincter of bladder simultaneously with emission - both under control of sympathetic nervous system - will prevent retrograde flow of semen. Destruction of the sphincter during prostatectomy causes retrograde ejaculation.
05-12-2014, 06:36 AM
Good.... One I know of is tamsulosin which is alpha blocker and hence sphincter won't close .
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