Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Urinary Tract Infection In Adults ?
    ### Response:
    The urinary tract is the body's drainage system for removing wastes and extra water. The urinary tract includes two kidneys, two ureters, a bladder, and a urethra. The kidneys are a pair of bean-shaped organs, each about the size of a fist and located below the ribs, one on each side of the spine, toward the middle of the back.
    