PATHOLOGY

Detailed explanation-1: -In the absence of ejaculation, spermatozoa stored in each vas deferens dribble through the terminal dilated ampulla into the ejaculatory duct, where they are washed away during micturition. The distal urethral meatus discharges urine or semen from the body.

Detailed explanation-2: -It carries urine from the urinary bladder to the outside of the body. It also helps in the transfer of sperms to the vagina. Thus, the urethra is the common pathway for both urine and semen.

Detailed explanation-3: -During sexual arousal, muscles at the base of the bladder contract in order to close off the passageway from the bladder into the urethra, the tube through which urine and semen leave the body. This makes it impossible for urine to be released during ejaculation.