Final answer:
The route of the sperm from the testes to the urethral opening follows the sequence: seminiferous tubule, epididymis, ductus deferens, ejaculatory duct, prostatic urethra, and membranous urethra.
Step-by-step explanation:
The correct sequence of the route of the sperm from the testes to the urethral opening is as follows:
Seminiferous tubule: The site in the testes where spermatogenesis occurs, producing primary spermatocytes.
Epididymis: The structure where sperm mature and are stored
Ductus deferens: Also known as the vas deferens, it transports sperm from the epididymis to the ejaculatory duct
Ejaculatory duct: Formed by the union of the ductus deferens and seminal vesicle duct, it empties into the urethra
Prostatic urethra: The portion of the urethra that passes through the prostate gland
Membranous urethra: The portion of the urethra that passes through the urogenital diaphragm.