Interesting+Facts+About+The+System

=__Interesting Facts About The System__=

- The Excretory substances can be poisonus. - About 300ml of water is lost from your lungs each day. - The bladder can hold up to 500ml of urine comftorably for 2-5hrs. - Small amounts of toxic wastes are emptied into the Bladder every 50-60 hours. - The liver is the largest gland, the heaviest organ and the second largest organ in the human body. - The skin is the largest organ in the human body. - Skin weighs more than any single internal organ. The skin makes up 15% of body weight. - The average square inch of skin holds 650 sweat glands, 20 blood vessels, 60000 melanocytes and more than 1000 nerve endings.