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NBME 19 Answers

nbme19/Block 0/Question#0 (reveal difficulty score)
A 30-year-old man develops urinary ...
pelvic nerves πŸ” / πŸ“Ί / 🌳
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 +12 
submitted by βˆ—monoclonal(24),
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hTis geiam hssow eht limleptu nvies hhciw idran abrset sti.eus eyas .avilus o(t eays ot msis ,it ubt i dd)i


 +3 
submitted by βˆ—brasel(17),
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lfrvOewo eiinnccnneto si teensrp rabddl(e sifll tneh kelsa itlhl,gys) so :theier

1). nghmoseti bgnckloi ofultow ;g(.e. B)HP

.)2 mpdriaei itaoonrctnc of ealddrb .(;.eg dgadaem )envers

Olyn hte cevpli enerv scaesu ruteodrs trntcnocoi,a os ti is eht noyl slopibes er.nwsa lnEaretx iprcshnet, aleddunp evr,ne and llteekas celmus lla esdo hte maes t.nhgi yiacgHtrops evenr hpsel inarte eurni ex(srela )rsuretdo os ti si clryale otn eada.dmg

solidshake  I agree answer is the parasympathetic Pelvic Splanchnic nerve, but don't forget there are 2 mechanisms that are affected when it's damaged: 1. Impaired involuntary contraction of bladder and also 2. Impaired involuntary relaxation of the internal urethral sphincter. Pelvic Splanchnic nerve facilitates both of those + voluntary somatic relaxation of external urethral sphincter via pudendal nerve allows you to pee +  
chaosawaits  @solidshake I may be just unable to search properly, but I found the internal urethral sphincter to be innervated by the sympathetic fibers from T10-L2 through the inferior hypogastric plexus (source: Wikipedia) Urination occurs by preganglionic inhibition of the sympathetic fibers via descending reticulospinal tract. Fact check appreciated. +2  



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