ANATOMY

Detailed explanation-1: -Urinary tract infections are common, especially in women. Also called UTI.

Detailed explanation-2: -A urinary tract infection may involve different sections of the urinary tract including the following: Urethritis: An infection of the urethra, the hollow tube that drains urine from the bladder to the outside of the body. Cystitis: A bacterial infection in the bladder that often has moved up from the urethra.

Detailed explanation-3: -Bladder infections are also called cystitis. Sometimes people use the more general term, urinary tract infection (UTI), to mean a bladder infection, although UTIs can occur in other parts of the urinary system. UTIs that occur in the urethra only are called urethritis. A kidney infection is called pyelonephritis.

Detailed explanation-4: -A UTI develops when microbes enter the urinary tract and cause infection. Bacteria are the most common cause of UTIs, although fungi rarely can also infect the urinary tract. E. coli bacteria, which live in the bowel, cause most UTIs.