What Protects A Human Being From External Danger? A Car 's Seat Belt?

1280 Words Aug 14th, 2014 6 Pages
What protects a human being from external danger? A car 's seat belt? A helmet? Or our very own organ known as the skin? The skin is one of the most amazing organs in the human body. Skin is made up of specific cells and tissues to act as the boundary between you, me and the world. However, there are some factors that we have to pay attention to regarding our skins. The physiology of Skin will give an in dept explanation and description of its structure, functions, and diseases.
The skin is the largest organ in the integumentary system with an area estimation of 20 square feet. It forms a barrier that prevents harmful microorganism and chemicals from entering the body. Other important functions are insulation, temperature regulation, sensory perception, control of insensible fluid loss, store fat, and act as a reservoir for the synthesis of Vitamin D. Skin is a dynamic organ that undergoes countless changes throughout life as outer layers are shed and replaced by inner layers. Its thickness varies on the location in our anatomy. The integument consists of two layers known as the epidermis and the dermis, which rests on a fatty subcutaneous layer (hypodermis). The epidermis is the outer layer of the skin. The dermis is the second layer of the skin, beneath the epidermis. Skin cancer is an abnormal growth of skin cells and is most often developed on skins that are exposed to the sun. There are three major types of skin cancer: basal cell carcinoma, squamous cell carcinoma,…

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