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skin

skin

/skin/

Noun

The skin is the largest and heaviest organ of the body, covering every square inch of its surface. While it appears to be one single coat of tissue, it is actually organized into several layers: epidermis, dermis, and subcutaneous (hypodermis). The skin has several functions. It protects against physical trauma and infection. It helps us to retain moisture in our body. It contains many of our sensing abilities, such as pain, heat, cold and vibration. It retains heat. It’s even part of our communication system; the skin changes shape when we smile or frown, and reddens when we are embarrassed or ashamed.