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JB Anata & Phys
Integumentary System
| Question | Answer |
|---|---|
| Integumentary System | The body covering including skin, hair, and nails |
| medical prefix's for skin are | derm- dermat-, cut-, cutan- |
| Structures of the skin | epidermis, dermis, and subcutaneous |
| Epidermis | outer layer of the skin composed of stratified squamous epithelium |
| Epidermis is composed of | 5 strata (layers); regenerates from the bottom strata and forces cells outward, packing them close together |
| The outer strata (corneum) is composed of | |
| the epidermis contains no | nerve endings or blood vessels |
| the epidermis provides a | protective waterproof covering |
| the epidermis contains | melanocytes (pigment cells) for protection from sunlight |
| The epidermis is protected by | normal flora (bacteria) which serve as a natural protection |
| the epidermis regenerates | readily |
| Dermis (true skin) | made up on dense connective tissue |
| Dermis contains collagen which is | gluelike fibers that run parallel to the skin and are the source of body lines |
| blood vessels are in excellent supply in the dermis layer they do what | they dilate to bring blood near the surface for cooling and constrict to prevent loss of heat |
| sweat glands lie deep in the dermis and send secretions through the ducts to the skin for | |
| sebaceous glands open into hair folicles and secrete sebumto keep hair and skin | lubricated and provide protection against both bacteria and drying |
| sensory receptors are located in the dermis | they are receptors for pain touch cold heat and vibration |
| arrector pili muscles (attached to teh hair contract to make | hair stand up and produce chillbumps |
| Subcutaneous (below the skin) | made up of adipose tissue |
| Sub-Q provides | insulated gives the body a rounded appearance |
| sub-q tissue is closed with what kind of suture during surgery | absorbable |
| sub-q skin is used to inject meds that would need to be | slowly absorbed |
| sub-q skin heals more | slowly and is a good medium for bacteria to grown |
| Appendages of the skin (such as hair and nails) are | extensions of the epidermis |
| hairs color is dirived from | melanocytes |
| hair is kept pliable by oil from the | sebaceous glands |
| excess hair may be __________ before surgery | shaved |
| skin acts as a mechanical barrier to __________________. | microorganisms |
| Skin acts as a ____________, to keep us in touch with out environments. | sensory organ |
| skin regulates _________by the process of ______________(sweating) and radiation(blood | evaporation, (blood to the body surface to give off heat) |
| skin protects against ______________ and ______________. | physical trauma and fluid loss |
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