This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'In an adult male, on per rectal examination, the following structures can be felt anteriorly except- \nSelect and explain. \nA. Internal iliac lymph nodes, B. Bulb of the penis, C. Prostate, D. Seminal vesicle when enlarged', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The following structures can be palpated by the gloved index finger inserted into anal canal and rectum in the normal person:-\n\n1. Anteriorly\ni)\xa0\xa0 In males\n\nOpposite terminal phalanx:- Contents of the rectovesical pouch, posterior surface of bladder, seminal vesicle, and ductus deferens.\nOpposite middle phalanx :- Rectoprostatic fascia and prostate.\nOpposite proximal phalanx:- Perineal body, urogenital diaphragm, and bulb of the penis.\n\nii)\xa0 In females\n\nOpposite terminal phalanx:- Rectouterine pouch, vagina, and cervix.\nOpposite middle phalanx :- Urogenital diaphragm and vagina.\nOpposite proximal phalanx:- Perineal body, and lower part of the vagina.\n\n2. Posteriorly\n\nSacrum, Coccyx, anococcygeal body and anorectal ring.\n\n3. Laterally\n\nIschiorectal fossae and ischial spines.', 'role': 'assistant'}]