Functions of the skin

Here are the primary functions of the skin:

• Protection: It acts as a physical barrier against pathogens, UV radiation, mechanical injury, and chemical damage. It also prevents excessive water loss from the body.
• Temperature Regulation: Through sweating and by controlling blood flow to the surface, the skin helps maintain a stable internal body temperature.
• Sensation: Nerve endings and specialized receptors in the skin detect touch, pressure, pain, and temperature, allowing the body to interact with its environment.
• Vitamin D Synthesis: Upon exposure to sunlight, the skin synthesizes vitamin D, which is crucial for calcium absorption and bone health.
• Excretion: Small amounts of waste products, such as urea and salts, are excreted through sweat.
• Absorption: While limited, the skin can absorb certain fat-soluble substances, such as medications applied topically.