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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.