Final answer:
The inguinal canal is the opening through which the spermatic cord passes, allowing the transfer of sperm from the testes to the exterior.
Step-by-step explanation:
The opening through which the spermatic cord passes is known as the inguinal canal. This canal is an essential part of the male reproductive system, where the ductus deferens (also called the vas deferens) extends from the epididymis, through the inguinal canal, into the abdominal cavity, and finally to the pelvic cavity.
The inguinal canal allows the transfer of sperm from the testes to the outside of the body.