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NBME 23 Answers

nbme23/Block 3/Question#20

An 82-year-old woman is brought to the physician by ...

Decreased function of the puborectalis muscle

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submitted by gabeb71(15),

The puborectalis muscle, which is one of the muscles that comprise the pelvic floor and plays an important role in both fecal continence and defecation, is tonically contracted and maintains the anorectal angle at rest.

here is a picture: https://www.123rf.com/photo_46940875_stock-vector-the-rectum-and-anus-showing-the-puborectalis-muscle-part-of-the-levator-ani-used-for-the-control-of-.html

gh889  How do you differentiate this from hypertonicity of the internal anal sphincter? +  
gh889  nvm. im dumb lol +