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Overview of the Integumentary (Skin) System

Author(s): Center for Educational Outreach, Baylor College of Medicine

Pigmentation

Effects of the sun’s rays or a tanning salon results with the manufacture of melanin, and built up as keratinocytes. The higher the number of keratinocytes results in a tan, or darker color of skin, and aids in the breakdown of folic acid. Increased amounts of melanin protects the skin from UV radiation. However, too little can lesson production of vitamin D and impair calcium absorption in the body.