Which zone accounts for about 5% of the glandular tissue?

Which zone accounts for about 5% of the glandular tissue?

• A. Transitional
• B. Central
• C. Peripheral
• D. Fibromuscular

Answer: (A)

The main idea is the zonal anatomy of the prostate and how glandular tissue is distributed. About 5% of the prostate’s glandular tissue sits in the transitional zone, which surrounds the proximal urethra. The central zone makes up roughly 25%, and the peripheral zone contains the majority—about 70%. The anterior fibromuscular stroma has little to no glandular tissue. This is why the transitional zone is described as the small zone around the urethra that accounts for only a small fraction of glandular tissue, and it’s also the zone where BPH tends to arise.

The main idea is the zonal anatomy of the prostate and how glandular tissue is distributed. About 5% of the prostate’s glandular tissue sits in the transitional zone, which surrounds the proximal urethra. The central zone makes up roughly 25%, and the peripheral zone contains the majority—about 70%. The anterior fibromuscular stroma has little to no glandular tissue. This is why the transitional zone is described as the small zone around the urethra that accounts for only a small fraction of glandular tissue, and it’s also the zone where BPH tends to arise.