Final answer:
The epididymis is a structure for sperm maturation attached to the testes, the vas deferens transports sperm from the epididymis to the ejaculatory duct, and the seminal vesicles produce seminal fluid that mixes with sperm to form semen.
Step-by-step explanation:
The epididymis is a comma-shaped structure located on the top and posterior portion of the testes. Its primary function is to store and mature sperm after they have left the testicles. The vas deferens, also known as ductus deferens, transports mature sperm from the epididymis, behind the bladder, to the ejaculatory duct formed with the duct from the seminal vesicles. A vasectomy involves the removal of a section of the vas deferens, preventing sperm from being released during ejaculation.
The seminal vesicles are located near the vas deferens and behind the bladder. They contribute to the seminal fluid, which combines with sperm to create semen. This fluid provides nutrients and a medium through which sperm can swim.