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Urinary Tract Infections in Adults
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Urinary Tract Infections in Adults Urinary tract infections are a serious health problem affecting millions of people each year. Infections of the urinary tract are common--only respiratory infections occur more often. Each year, urinary tract infections (UTI's) account for about 8 million doctor visits. Women are especially prone to UTI's for reasons that are poorly understood. One woman in five develops a UTI during her lifetime The Urinary Tract The urinary system consists of the kidneys, ureters, bladder, and urethra. The key players in the system are the kidneys, a pair of purplish-brown organs located below the ribs toward the middle of the back. The kidneys remove liquid waste from the blood in the form of urine, keep a stable balance of salts and other substances in the blood, and produce a hormone that aids the formation of red blood cells. Narrow tubes called ureters carry urine from the kidneys to the bladder, a triangle-shaped chamber in the lower abdomen. Urine is stored in the bladder and emptied through the urethra. The average adult passes about a quart and a half of urine each day. The amount of urine varies, depending on the fluids and foods a person consumes. The volume formed at night is about half that formed in the daytime