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NBME 24 Answers

nbme24/Block 4/Question#19

A 38-year-old woman, gravida 4, para 4, comes to ...

Internal anal sphincter

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submitted by neonem(263),

Internal anal sphincter is composed more of smooth muscle and is under parasympathetic/sympathetic control, while external anal sphincter is skeletal muscle and controlled by pudendal nerve. All of the other muscles listed are skeletal muscle of the pelvic floor and are more likely to be involved in Kegel exercises.





charcot_bouchard  When i faced this ques i did some Kegel. Felt something in my pee pee but not in my b*e. I exclude all option because they are bigger muscle of pelvic floor except EUS & IAS. And also remeber Kegel can be used as a treatment of prem. ejaculation not premature defication. +1