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
Annoy Squidward Day is a day that was mentioned in the episode, Employee of the Month, as part of a joke. It was first shown in the calendar. It is supposedly held annually on the 15th of February. SpongeBob laughs and says that Annoy Squidward Day is on this day, and points to the calendar. Trivia. If you look closely on the calendar, below the 15th is the 21st, when it should be the 22nd, so the week appears to only have 6 days.