Final answer:
The ampulla, part of the ductus deferens at ejaculation, and the seminal vesicles, which contribute to semen formation, are located posterior to the urinary bladder. The prostate gland is situated anterior to the rectum at the base of the bladder, releasing fluid that affects semen coagulation.
Step-by-step explanation:
Location of the Ampulla and Seminal Vesicle in Relation to the Bladder
The ampulla is an enlarged portion of the ductus deferens that passes through the ejaculatory ducts to join the fluid from the seminal vesicles, contributing to the formation of semen. The seminal vesicle glands are located posterior to the urinary bladder and play a crucial role by contributing approximately 60 percent of the semen volume. This seminal vesicle fluid is alkaline, containing fructose that sperm use for generating ATP, necessary for movement through the female reproductive tract. Meanwhile, the bladder, positioned anterior to the rectum and posterior to the pubic bone, collects urine from both ureters.
The prostate gland sits at the base of the bladder, encapsulating the prostatic urethra and is located anterior to the rectum. It secretes an alkaline fluid into the semen, important for fertility. The prostate's contribution is critical for the coagulation and subsequent decoagulation of semen, aiding in retaining it within the female reproductive tract following ejaculation.