Which of the following is a histological zone of the prostate?

• A. Adventitia
• B. Central zone
• C. Capsule
• D. Mucosa

Answer: (B)

Prostate tissue is organized into three histological zones: peripheral, central, and transitional. The central zone is the part that surrounds the ejaculatory ducts and is histologically distinct from the other zones. Adventitia, capsule, and mucosa are not glandular zones of the prostate themselves; adventitia is loose connective tissue outside a capsule, the capsule is the fibrous covering around the gland, and the mucosa lines the prostatic urethra rather than representing a glandular zone. So the central zone fits as the histological zone of the prostate.