Final answer:
Swollen, twisted veins near the testes are known as a varicocele, a condition that may affect fertility and comfort. Spermatogenesis occurs in the seminiferous tubules, and mature sperm are transported via the vas deferens.
Step-by-step explanation:
Swollen, twisted veins near the testes are known as a varicocele. This condition can cause discomfort, swelling, and reduced fertility. Varicoceles are fairly common, especially during puberty, and are similar to varicose veins that can occur in the legs. Regarding the other options, a hydrocele involves the accumulation of fluid around the testicle; hypospadias is a congenital condition where the opening of the urethra is not located herpes genitalis is a sexually transmitted infection caused by the herpes simplex virus; and testicular torsion is an emergency condition where the spermatic cord twists and cuts off the blood supply to the testis. In the context of testicular reproduction and sperm development, it's important to note that sperm originate and mature in different parts of the male reproductive system. Spermatogenesis, the production of sperm, occurs in the seminiferous tubules within the testes. After formation, sperm develop tails and mature in the epididymis. The vas deferens then transports mature sperm from the epididymis to the urethra during ejaculation.