<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: All are sphincters of lower genito urinary tract of female except
Options:
A. Pubovaginalis
B. External urethral sphincter
C. Internal urethral sphincter
D. Bulbospongiosus
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is C: Internal urethral sphincter. Explanation: In males and females, both internal and external urethral sphincters function to inhibit the release of urine. In males, the internal sphincher muscle of urethra functions to prevent reflux of seminal fluids into the male bladder during ejaculation. Females do have a more elaborate external sphincter muscle than males as it is made up of three pas: the sphincter urethrae, urethrovaginal muscle, and the compressor urethrae. Ref - semantischolar.org<|im_end|>
