Fig. 33-2. The bladder and urethra. A, Posterior view, showing the prostate and seminal vesicles. B, Right lateral view. The blue areas are those covered by peritoneum. C, Coronal section, showing the trigone and colliculus seminal is on the posterior walls of the bladder and urethra, respectively. Cf. Fig. 34-3A. Click for high resolution image.