About Our Skin
Our skin, being the outer protective layer of the body, is the largest organ in one's body. It has many functions including the synthesis of vitamin D and controlling the bodies energy loss by radiation, convection and conduction.
Your skin is made up of an outer protective layer, the epidermis, which has no blood vessels, nerve endings etc. This layer is made up of three different skin cells. The basal cell layer forms the deepest layer of the epidermis and this layer continuously divides and cells grow outwards. As these cells grow outward they are known as squamous cells. As the cells move further away from the blood supply they die and form a layer of dead skin. We continuously shed this layer of dead skin.

Between the basal cells there are melanocytes. These are interposed between every 10th to 15th basal cell. Melanocytes have long protrusions between the more superficial cells. These bud off and gets incorporated into the squamous cells. These buds contain melanin, the molecule that gives skin its colour. The more Sun you're exposed to the more melanin is transferred into your squamous cells and the darker your skin becomes.

The epidermis is separated from the deeper dermis by the basement membrane. This is strong “glue” like structure that is an important barrier for any cancers that develop within the epidermis. All the other functions of skin is done by the deeper dermis layer. This layer contains blood vessels, nerves and other structures to accomplish all the functions mentioned above.

Any of the cells in skin can become malignant (cancerous) mostly secondary to damage caused by ultra violet rays in sunlight. Skin cancer is the most common cancer in both men and women. The most common skin cancers are basal cell cancer (basal cell carcinoma) and squamous cell cancer (squamous cell carcinoma). Melanoma is the most dangerous form of skin cancer. It can almost always be cured if found and removed before it spreads to other parts of the body (metastasise). The risk of melanoma spreading depends on the depth to which the melanoma is penetrating within the skin. It is essential to remove these lesions as early as possible as very little can be done once these cancers have started spreading.
Skin Anatomy

Skin Anatomy