Facts About The Skin

Posted on 2013-08-14 05:42:26

Did you know that the skin is actually the largest organ of the body, and yet so many of us take it for granted? It actually makes up 16% of the body weight. It covers the entire body having a surface area of 1.8 square meters. The skin has two layers referred to as epidermis and dermis. The skin also has many cells and structures that are specialized towards specific functions. The epidermis is the outer layer serving as a physical barrier between the exterior environment and the interior body. The dermis is the internal living part of the skin containing living cells, nerve supply and blood vessels. The functions of the skin include:
  1. Sensation
  2. Storage of water and fat
  3. Regulating temperature
  4. Preventing water loss
  5. Physical barrier that prevents entry of germs such as bacteria and against mechanical insults
  6. Protection against heat and ultraviolet rays
  7. Synthesis of vitamin D
  8. Functional correlations with cosmetics, sexuality and socialization.
The characteristics of the skin vary throughout the body, depending on location and function. The soles of the foot have thicker skin, palms have smoother skin with more nerve endings, and the head has more hair follicles than any other part of the skin. The hair, nails and sebaceous glands are all considered derivatives of the skin. The top layer of the skin does not discriminate and absorbs chemicals that can turn out to be toxic and irritable like skin lightening products. Skin lightening agents make the skin break down by beginning to expose the inner layers and reducing the ability of the skin to protect the inner skin which contains blood vessels, nerve supply and other supplies. The top layer of the skin actually renews itself every 15 to 60 days and in this way also allowing newer cells to be more visible.