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Did you know?
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
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 human body produces and destroys 15 million blood cells every second.
Did you know?
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.