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': 'Length of the female urethra - \nSelect and explain. \nA. 2cm, B. 4cm, C. 6cm, D. 8cm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Urethra\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0Length\no\xa0\xa0\xa0Male - 20 cms\no\xa0\xa0\xa0Female - 4 cms\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0Shortest part of the male urethra -\xa0Membranous part\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0The longest part of the male urethra - Penile urethra\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0Location of sphincter urethrae - Membranous part\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0Prostatic urethra\no\xa0\xa0\xa0Widest part\no\xa0\xa0\xa0Most dilatable part\no\xa0\xa0\xa0Concave anteriorly.\no\xa0\xa0\xa0Route- downwards & forwards. Exit prostate slightly anterior to its apex.\no\xa0\xa0\xa0Crescentic on the cross section\no\xa0\xa0\xa0\xa0Structures on the posterior wall\n§\xa0\xa0Urethral crest\n§\xa0\xa0Colliculus seminalis (verumontanum)\n§\xa0\xa0Opening of ejaculatory ducts\n§\xa0\xa0Prostatic sinuses with the opening of prostate glands\no\xa0\xa0\xa0Lymphatics\n§\xa0\xa0Membranous part - Internal iliac nodes\n§\xa0\xa0Prostatic part - Internal iliac nodes\n§Penile urethra - Deep inguinal nodes.', 'role': 'assistant'}]