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Functions of the Skin

Updated: Apr 7


1) Protection (Functions of the Skin)

  • Acts as a physical barrier against mechanical injuries, harmful chemicals, and pathogens.

  • The acidic pH of the skin surface inhibits bacterial growth.

  • Melanin in the epidermis protects against UV radiation.

2) Sensation

  • Nerve endings in the dermis allow the skin to sense touch, pressure, temperature, and pain, enabling the body to respond to environmental changes.

3) Temperature Regulation

  • Sweat glands produce sweat that cools the body when it evaporates.

  • Blood vessels in the dermis dilate to release heat or constrict to retain heat, helping to regulate body temperature.

4) Excretion

  • Sweat glands excrete waste products like urea, salts, and water, helping to detoxify the body.

5) Vitamin D Synthesis

  • The skin produces vitamin D when exposed to sunlight, which is essential for calcium absorption and bone health.

6) Immune Defense

  • The skin contains immune cells that detect and respond to pathogens, providing a first line of defense against infections.



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