Function of Hair

Hair is one of the characteristic features of mammals. It is present on the skin of almost all the parts of the body, except for the palms of the hands, soles of the feet, and lips. The hair on different parts of the body can vary in color, texture, thickness, and length. Hair has several functions in the body, such as:

1. Traps a lot of air

Hair traps a lot of air, which provides insulation to the body. The air trapped in the hair acts as a layer of protection against cold temperatures, as it helps to retain the body heat and keep the body warm. This is particularly important for animals living in cold climates, as it helps them to survive in extreme temperatures.

2. Protects skin from UV radiation

Hair also protects the skin from the harmful effects of UV radiation from the sun. The hair on the scalp acts as a shield, protecting the skin from the harmful effects of the sun's rays. This is important because prolonged exposure to UV radiation can cause skin damage and increase the risk of skin cancer.

3. Sensory function

Hair also has a sensory function, as it contains nerve endings that can detect touch, pressure, and pain. This is particularly important for animals that rely on their sense of touch, such as cats and dogs.

4. Social function

Hair also has a social function, as it can be used for communication and display. In some animals, such as lions and peacocks, the hair is used to display dominance, attract mates, and intimidate rivals.

Conclusion

In conclusion, hair is an important feature of mammals, with several functions in the body. It provides insulation, protects the skin from UV radiation, has a sensory function, and can be used for communication and display.