Final Answer:
Spermatozoa originate in the testes, travel through the epididymis, vas deferens, ejaculatory duct, and then enter the urethra. They are expelled from the body through the urethral opening during ejaculation.
Step-by-step explanation:
Spermatozoa, the male reproductive cells, are produced in the testes. Within the testes, the seminiferous tubules facilitate spermatogenesis. After their production, spermatozoa move into the epididymis for maturation and storage. From the epididymis, they pass through the vas deferens, a muscular tube that transports sperm toward the ejaculatory duct during ejaculation. The ejaculatory duct is formed by the convergence of the vas deferens and seminal vesicles and is responsible for propelling sperm into the urethra.
Upon reaching the urethra, the spermatozoa join with seminal fluid produced by accessory glands, such as the seminal vesicles, prostate gland, and bulbourethral glands. The combined fluids form semen, which is expelled from the body through the urethral opening during ejaculation. This intricate pathway from the testes to the urethral opening ensures the transport and eventual release of spermatozoa during sexual activity for potential fertilization.
In summary, the journey of spermatozoa spans from their production in the testes through the epididymis, vas deferens, and ejaculatory duct, finally reaching the urethra for expulsion. This orchestrated movement allows for the delivery of spermatozoa along with seminal fluids, enabling the reproductive process essential for procreation.