I thought I would pass along some interesting facts about human physiology. The more I study, the more I am in awe at how God has formed us. Did you know... The kidneys are more than just the main site of our personal waste water treatment plant. When the red blood count is low, the kidneys secrete the hormone used to stimulate production of new red blood cells. 1.5 million red blood cells are produced and destroyed in the human body every second. A red blood cell does not have a nucleus and is unable to divide or repair itself. It only lasts about 120 days. At that point specialized cells break down the molecules. The amino acids are used by the body to build other cells. Iron is stripped and stored in the liver and spleen to build more red blood cells when the diet does not contain enough iron. Some of the remainder is converted to bilirubin which is an antioxidant, protecting cells from free radicals. It is not unusual for the clavicle (collar bone) to break during the birth process...