Final answer:
The gland below the bladder and surrounding the urethra is called the prostate gland. It secretes an alkaline fluid that contributes to semen production.
Step-by-step explanation:
The gland below the bladder and surrounding the urethra is called the prostate gland.
Located just below the seminal vesicles, the prostate gland secretes an alkaline fluid that makes up close to 30 percent of semen. This prostatic fluid contains a high concentration of zinc, which sperm need to be healthy and motile.
The prostate gland is part of the male reproductive system and plays an important role in the production and function of semen.