What Are Black and Blue Marks?
What Are Black and Blue Marks? Black-and-blue marks indicate bleeding under the skin. When we receive a sharp blow, tiny blood vessels break
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Skin
How Does Hair Grow?
How Does Hair Grow? Hair grows out of tiny openings (or follicles) in the skin. Each hair is a series of scaly cells piled one on top of the
Why Do We Get Sunburned?
Why Do We Get Sunburned? Sunburn is the result of over-exposure to sunlight, which causes heat and light damage to the skin. Ultraviolet ray
Why Do We Sweat?
Sweating plays an important role in the body. It is one of the ways the body is able to cool off when we become too warm. When we exercise,
Do Snakes Shed Their Skin?
Do Snakes Shed Their Skin? A snake sheds its skin several times a year. When a snake grows, its skin doesn’t grow with its body. Instead,