Various morphologic features of the rat prostate complex were characterized by anatomic dissection and by light microscope histology. The prostate complex is viewed as a whole and it is related to the individual portions of the male reproductive system. The three lobes of the prostate are designated as ventral, lateral, and dorsal according to their relation to the urethra. These lobes are connected to the urethra by fascia and a series of ducts. Relations of the prostate to the seminal vesicles, coagulating glands, vas deferens and ampullary glands, urinary bladder, and ureters are described. Vascular supply is also reviewed. While the acinar pattern of each prostatic lobe is unique, the dorsal and lateral lobes more closely resemble each other than the ventral lobes.

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