Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney. From the kidneys, urine travels down two thin tubes called ureters to the bladder. The ureters are about 8 to 10 inches long. Muscles in the ureter walls constantly tighten and relax to force urine downward away from the kidneys. If urine is allowed to stand still, or back up, a kidney infection can develop.
SAGITTARIUS (November 23-December 21) LUCKY DAY: Thursday THE per fect woman for a Sagittarian man is a Gemini - which is why Brad Pitt and Angelina Jolie are Hollywood's golden couple. Celebs with stars in their (sex) lives; New PEOPLE astrologer Claire Petulengro takes a look at what 2009 holds for some of the biggest names
Holidays are celebrated for all sorts of reasons. Some honor heroes, others commemorate religious events, but April 1 stands out as the only holiday that celebrates foolishness. April Fools' Day, or All Fools Day, is an odd celebration with a strange history.t's probably no coincidence that April Fools' Day is celebrated at the same time that two other similar holidays are celebrated. In ancient Rome, the festival of Hilaria was thrown to celebrate the resurrection of the god Attis.