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Integumentary Test
| Question | Answer |
|---|---|
| The integumentary system includes | skin, hair, nails, exocrine glands |
| Mucous membranes | The moist, inner lining of some organs and body cavities (mouth, nose, lungs, and stomach) makes mucous, open to the outside world. |
| Serous membranes | Membranes lining closed internal body cavities (pleura, pericardium, peritoneum) secretes a slight amount of lubricating fluid. |
| Cutaneous membranes | Stratified squamous epithelial membrane (skin) |
| Synovial membranes | Connective tissue membranes that line the cavities of freely moveable joints (shoulder, elbow, knee) does not open to the outside world. |
| What is the purpose of synovial fluid? | The fluid cushions the ends of bones and reduces friction when you move your joints. |
| What are the 5 functions of skin? | 1. Provides a protective barrier against harmful substances 2. Prevents moisture loss 3. Reduces harmful effects of UV radiation 4. Regulates body temperature 5. Its a sensory and immune organ |
| Epidermis | the top layer of skin on the body, protects the body from infection. Layers: Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum. |
| Dermis | Thick layer of living tissue below epidermis. Contains blood capillaries, nerve endings, sweat glands, and hair follicles. |
| Hypodermis | The bottom layer of skin, stores energy, connects dermis to muscles and bones. (fat cells) |
| List the epidermal layers from outside to inside | - stratum corneum - stratum lucidum - stratum granulosum - stratum spinosum - stratum basale ( Can't lose great stinky boys) |
| What is the purpose of melanocytes? | To create melanin |
| What is melanin? | Provides pigmentation to skin, hair, and eyes and absorbs harmful UV rays to protect skin from sun damage. |
| Why is keratin an important factor of the skin? | Keratin is a protein that helps form hair, nails and outer skin layer. It supports skin, heals wounds, and keeps nails and hair healthy. |
| Sebaceous glands | a small gland in the skin which secretes a lubricating oily matter (sebum) into hair follicles. |
| Sudoriferous glands | sweat glands (eccrine or apocrine) which consists of secretory cells and a central lumen where material is secreted. |
| What is the purpose of the subcutaneous fat layer? | Pads the body. Protects the bones, muscles, and organs under the skin from physical damage. |
| What is sebum? | a sticky, oily substance produced by the sebaceous glands, helps moisturize and protect the skin. |
| First Degree Burn | Injury that affects the 1st layer of the skin (epidermis). The burn site is red, painful, dry, and with no blisters. Examples: mild sunburn |
| Second Degree Burn | affects the 1st and 2nd layer of the skin (epidermis and dermis). May cause swelling and red skin. Possibly scarring. Examples: very hot water, flames, severe sunburns. |
| Third Degree Burn | Extends into the fat layer that lies beneath the dermis. Skin may appear stiff, waxy, leathery. Usually requires skin grafts. Examples: scalding liquid, flames, chemical burn) |
| ABCD rule | A- asymmetry B- borders are uneven C- color (dark black or multicolored) D- diameter greater than 6mm E- evolving - Used to guide physicians to recognize the main characteristics of suspicious skin lesions for melanoma. |
| Papillary layer | Top layer of the dermis. Much thinner than the reticular layer. Consists of collagen fibers, fibroblasts, fat cells, blood vessels, nerve fibers and touch receptors. |
| Reticular layer | Bottom layer of the dermis. Very thick and contains blood vessels, glands, hair follicles, lymphatics, nerve and fat cells. |
Created by:
cliftonmg
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