Answer:
They are paired pea sized gland present in the male reproductive system. They are located deep in the perineal pouch that lies at the base of the penis.
When sexually aroused, the glands secrete a viscous, salty and clear fluid which is pre-ejaculated. It neutralizes any residual acidity left in the urethra.
Now, the neutralized urethra serves a better passage for the sperms to move in the vagina.
So, the function to regulate acidity will be hampered if bulbourethral gland fails to work.