describe the epidermis and how it reacts to the environment to protect the other organs of the body?
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you mean like the fact that it sweats when you are hot to cool the body? it is your body's largest organ, and it sheilds the rest of the body from dirt and disease by providing a barrier between them and germs.
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Your skin is your largest organ. It covers your entire body and has a surface area of around 2 square metres. Its thickness varies from 0.5mm on your eyelids to 4mm or more on the palms of your hands and the soles of your feet. In total, it accounts for around 16 percent of your body weight.
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A lot, actually. The kidney and the small and large intestines are the most well-known ones. But your skin actually does it's share of excreting waste from your body too. And so do your lungs. Carbon dioxide is a waste product after all.
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THe ep[idermis is a layer of dead skincells, that primarily acts as a protective barrier against bacteria and viruses, aqueous solutions and water, etc. The dermis is the living part of the skin, and functions as a barrier, to modulate water and heat balance in the body and secretes substances to control viral, bacteria, and fungal growth- in addition, it is a critical component of the vitamin D synthesis system.  It regulates heat and cold using evaporative cooling of sweat, piloerection of hairs, increased or decreased blood flow to the surface of the skin, etc.  It is the largest organ by weight of the body.
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A. Tissue linings of the respiratory system
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It is a barrier of oil and perspiration, created by the sweat and sebaceous glands of the dermis, that protects the body from infections. We can strip this away by using harsh soaps thus disrupting the pH of the skin.
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Skin!\nFor more information, see this site:\nhttp://www.femail.com.au/skingeneral.htm
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Blood vessels are lined with simple squamous epithelium--in fact, the entire cardiovascular system is. \n\nSimple squamous epithelium is not well suited to places where there is wear and tear. It's quite fragile, and the places where the edges of cells are butted up against one another are weak points. It's usually found in places like this, where its "slick" surface facilitates flow of fluids.This epithelium is called mesothelium (as it is derived from mesoderm) when it is found in certain locations within the body. These include the linings of the peritoneal, pleural and pericardial cavities. Other places simple squamous epithelium can be found include; the glomerulus of the kidney, the walls of capillaries, and the alveoli of the lungs, to name a few. Here they are forming a thin sheet-like layer which allows for minimal resistance to diffusion
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The largest organ on the human body is skin. One of the most important jobs of skin is to rid our system of toxins which it does everytime you sweat. Sweating is vital to remaining healthy and most people do not do enough sweating in todays soft life to rid their systems of these toxins. Sauna's and steam rooms are a way to increase the amount of sweating. However I never spend more than 20-45 mins in one at a time, as you can overheat and pass out.
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The skin might be the answer they want.\n\nWhen we face a sudden emergency, we produce adrenaline.  This reduces blood flow to skin (which goes white) and directs extra blood to muscles, for fight / flight reactions.  The skin is OK like that, for ages.\n\nWe also reduce blood flow to skin, to reduce heat loss in cold conditions.  It is not sacrificed; if the conditions in the skin become too bad, it is flushed by fresh blood.
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Simple: Our skin has sensory nerves =)
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Skin is the largest organ on your body.\nMakes sense to take care of it right?\nMany things enter the body through the skin.\nSun, chemicals etc\nMany toxins exit the body through the skin in the form of sweat.\nTaking care of you skin is important.\nKeeps down odor.  Keeps the skin supple and healthy.
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In biology, an organ (Latin: organum, "instrument, tool") is a group of tissues that perform a specific function or group of functions. Usually there is a main tissue and sporadic tissues. The main tissue is the one that is unique for the specific organ. For example, main tissue in the heart is the myocardium, while sporadic are the nervous, blood, connective etc. (Wikipedia.org)\n\nIn zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis. Skin is considered one of the most important parts of the body.(Wikipedia.org)\n\nPretty much the skin is considered an organ because it is a group of tissues speciallizing in a certain task / tasks. For example the skin regulates temperature by using the sweat glands to produce sweat - sweat evaporates and cools the body.
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Homeostasis \nHomeostasis is the physiological process by which the internal systems of the body (e.g. blood pressure, body temperature, acid-base balance) are maintained at equilibrium despite variations in the external conditions. \nThe body can maintain the fluid levels using the kidneys, these organs filter out harmful chemicals and excess liquid into the bladder from which the urine is then expelled.  Body temperature is regulated somewhat by the skin, example, if you are hot you begin to sweat and this helps to cool the body, if you are cold you shiver this helps to raise, the body temperature.
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protection from bacteria\nprotection from water\nhelps to preserve body moisture (keep from dehydrating)\netc.
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Damage to the cuticle\nIllness\nStress\nNutritional deficiencies\nCertain conditions such as psoriasis
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You mean integumentary system?  Skin and feathers....