A tube that carries urine from the urinary bladder to the outside of the body. In males, urethra carries urine and semen through the penis; in females, urethra carries urine and emerges above vaginal opening.
More than 2500 pints of blood passes through the kidney each day.
Drinking two or more carbonated drinks a day was linked to a twofold risk of chronic disease.
(From a study published in Epidemiology)