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: Unknown
Narrowest part of male urethra - 
Select and explain. 
A. Prostatic, B. Membranous, C. Spongy, D. Penil
B: Membranous
Answer: B: Membranous 
Explanation: Ans. is 'b' i.e., Membranous o Narrowest and least dilatable part of male urethra - membranous urethra.o Widest and most dilatable part of male urethra - Prostatic urethra.o Shortest part of male urethra - Membranous urethra.o Longest part of male urethra - Penile urethra.