The human skin is the outer covering of the body. It is the largest organ of the integumentary system in humans. The skin has multiple layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs.
For the average adult human, the skin has a surface area of between 1.5-2.0 square metres (16.1-21.5 sq.ft), most of it is between 2-3 mm (0.10 inch) thick. The average sq. inch (6.5 cm. sq.) of skin holds 650 sweat glands, 20 blood vessels, 60,000 melanocytes and more than 1,000 nerve endings.
Skin plays a key role in protecting the body against pathogens and excessive water loss. Its other functions are insulation, temperature regulation, sensation, synthesis of vitamin D, and protection of vitamin B folates. Severally damaged skin will try to heal by forming scare tissue.
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Human Skin Diagram |
Skin plays a key role in protecting the body against pathogens and excessive water loss. Its other functions are insulation, temperature regulation, sensation, synthesis of vitamin D, and protection of vitamin B folates. Severally damaged skin will try to heal by forming scare tissue.
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