Integumentary System By: Darryl &Edgar

Functions of the skin When you’re Hot Sweat glands produce more sweat mainly water with salts and various other substances dissolved in it which evaporates from the skin tacking heat away with it. Blood vessels which carry more warm blood to the surface were the air outside your body can cool it. Your hairs lie flat so that there is no warm air trapped in between them.

When you’re cold You don’t sweat Blood vessels are narrow Erector muscles contract to make you’re hair stand up which traps warm air between them you see this affect goose, pimples, on your skin. Also the rest of your muscles automatically contact producing a little heat as a do so and making you shiver.

1 st 2 nd and 3 rd Degree Burns First-degree burns are red and very sensitive to touch, and the skin will appear blanched when light pressure is applied. First-degree burns involve minimal tissue damage and they involve the epidermis (skin surface). These burns affect the outer-layer of skin causing pain, redness and swelling. Sunburn is a good example of a first-degree burn.

2 nd Degree Burn Second-degree burns affect both the outer- layer (epidermis) and the under lying layer of skin (dermis) causing redness, pain, swelling and blisters. These burns often affect sweat glands, and hair follicles.

3 rd Degree burn Third-degree burns affect the epidermis, dermis and hypodermis, causing charring of skin or a translucent white color, with coagulated vessels visible just below the skin surface. These burn areas may be numb, but the person may complain of pain. This pain is usually because of second-degree burns. Healing from third-degree burns is very slow due the skin tissue and structures being destroyed. Third- degree burns usually result in extensive scarring.

Skin Structure and Functions The epidermis is the protective layer of the outer skin. The reason why we need skin is because it helps us protect our skin from harmful germs. Skin helps us from protected sunlight and uses sunlight for Vitamin D. Skin has 2 layers

Disease or Irritation Keep your feet clean and dry. Dry between your toes after swimming or bathing. Use a hair dryer. Wear shoes or sandals that allow air to circulate around your feet. Use talcum powder or an antifungal powder on your feet. Allow the shoes to dry for 24 hours before you wear them again. Wear socks to absorb sweat. White socks do not prevent athlete's foot. Wear a clean pair of socks every day. Wear thongs or shower sandals in public pools and showers.

Exposure to allergens can cause atomic dermatitis in some people. Symptoms may include: –Intense itching. –A red, raised rash or a dry, scaly rash. –Fluid- or pus-filled blisters. Skin irritants, such as poison oak, can produce contact dermatitis. Symptoms may include: –Itchy skin. –Mild skin redness. –Swollen, blistered, and irritated skin.

Skin Diagram

Vocabulary Dermis - The layer of skin beneath the epidermis that contains nerve endings, sweat glands, and blood and lymph vessels, the derma. Epidermis - The outer protective layer of the skin of vertebrates. Keratin- a tough fibrous protein that forms the outer layer of hair, nails, horns, feathers, and hooves Epithelial cells- one of the closely packed cells forming the epithelium Adipose Tissue- Relating to or consisting to animal fat Sweat glands- any of the tiny tubular glands that are found in the skin of humans and they give off sweat through pores. Sebaceous glands- any of the tiny glands in the skin that secrete on oil material into the hair follicle Hair- One of the five strands that grow from the skin and other mammals.