Final answer:
In the case of prostatic enlargement, the structure that can be squished is the prostatic urethra. This is the part of the urethra that is surrounded by the prostate gland, which becomes compressed due to the enlargement of the prostate.
Step-by-step explanation:
Prostatic enlargement in older males can compress certain structures located in close proximity to the prostate. Among the options provided, the correct answer is D) The urethra. Specifically, the prostatic urethra, which is the portion of the urethra that runs within the prostate gland, may be squished by an enlarged prostate.
The prostate gland's central location situates it at the base of the bladder, anterior to the rectum, and surrounding the prostatic urethra. When it enlarges, it most directly affects the urethra since it passes through the prostate gland.
In reference to the male urogenital tract, the urethra serves both the urinary and reproductive systems, receiving sperm via the ejaculatory ducts and secretions from the seminal vesicles during sexual intercourse. This dual role distinguishes it from structures like the urinary bladder, which is purely related to the urinary system.