Final answer:
The seminiferous tubules can stretch out to about 30 meters (90 feet) within each testis and are essential for the development and transportation of sperm within the male reproductive system.
Step-by-step explanation:
The seminiferous tubules are coiled structures present within the testes, and they play a crucial role in the process of spermatogenesis. The tubules are tightly packed within each testis, with each testis containing about 30 meters (90 feet) of seminiferous tubules when stretched out. These tubules are responsible for the development of sperm cells that start their maturation journey in the tubules' lumen, where they are eventually released into the testicular duct system, moving towards the epididymis for further maturation.
The epididymis is another coiled tube, approximately 6 meters (20 feet) long when uncoiled, where sperm continue to mature over around 12 days. After maturation, sperm are stored in the tail of the epididymis until ejaculation. During ejaculation, sperm are propelled through the ductus deferens, also known as the vas deferens, which are part of the spermatic cord, facilitated by the contraction of smooth muscles. Understanding the length and function of the seminiferous tubules provides insight into the intricate nature of the male reproductive system.