Some of his anatomical and physiological observations were accurate: for example, he demonstrated that urine was formed in the kidneys (as opposed to the bladder, as was commonly believed). His most important discovery was that arteries transport blood, although he did not discover circulation” (Galen, BBC). His expertise in treating gladiator wounds also contributed to his fame. For example, he cleaned wounds with wine and sponges to prevent infection; and if the wounds were too large he performed sutures. The Hippocratic bench was also an important aspect of Galen's medical practice, it was a bed used to stretch the patient's body and the tension helped align broken bones. He also discovered the sedative effects that opium and alcohol had