Urinary tract refers to the system that is concerned with formation storage and excretion of urine. It consists of two kidneys that lie at the back of upper part of abdomen, one on each side
Urine formed in the kidneys is drained by two hollow tubular structures, called the ureters into the bladder.
Bladder is a hollow muscular bag that lies in the lower part of abdomen. Bladder serves to hold urine tail it is full and then contracts to empty itself through another hollow tube called urethra, to the outside A muscular valve, called the sphincter, located in the urethra, keeps the urethra closed & opens when a person wishes to pass urine.