The spermatic cord joins with a duct from the seminal vesicle to form which duct?

The spermatic cord contains various structures, including the ductus deferens, which is responsible for transporting sperm from the epididymis. When the ductus deferens reaches the level of the seminal vesicle, it merges with a duct from the seminal vesicle to form the ejaculatory duct. This duct plays a crucial role in the male reproductive system as it allows the passage of sperm and seminal fluid into the urethra, leading to ejaculation.

Understanding the anatomy and function of these components helps explain why the ejaculatory duct is the correct answer. It is specifically the point where the sperm and seminal fluid combine before being expelled from the body, thereby highlighting the significance of this structure in the reproductive process. The other options do not correctly represent the anatomical relationship between the spermatic cord and seminal vesicle duct.