1. the duct that transports sperm from the epididymis toward the ejaculatory duct and
urethra

Ductus deferens or vas deferens

Bladder infections - (cystitis) usually caused by bacteria.Enlarged prostate - in men, this can make it difficult to empty the bladder.Incontinence - when urine leaks out of the urethra.Kidney infections - when a bladder infection ‘backs up’ the ureters.Kidney stones - caused by infection and high blood levels of calcium.

Hope this helps