<prompt> The prostatic urethra is characterized by all of the following features, exceptIs the widest and most dilatable paPresents a concavity posteriorlyLies closer to anterior surface of prostateReceives prostatic ductules along its posterior wall  <response>: The prostatic urethra, the widest and most dilatable pa of the urethra canal, is about 3 cm. long The transverse section of this canal is shaped like a horse-shoe. Its convex pa is directed towards the front. 