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Charla Chapt5 Skin
Integumentary Chapt. 5
| Question | Answer |
|---|---|
| Outer major layer of skin | epidermis |
| Layer of skin containing blood vessels, and many skin structures | dermis |
| Layer of skin made of irregular fibrous connective tissue | dermis Dermis |
| Layer of skin made of stratified squamous epithelium | epidermis |
| Smooth muscle attache to each hair fiber | arrector pili |
| Responsible for goosebumps | arrector pili |
| secretes sweat in stressful situations | apocrine gland |
| Sweat glands found in axillae and genitals | apocrine |
| Sweat glands found all over body | eccrine |
| Sweat glands used for evaporative cooling | eccrine |
| Cells that produce color for skin | melanocytes |
| Substance that add color to skin and hair | melanin |
| waterproof protein that prevents dehydration | keratin |
| receptors for environments effect on the skin | encapsulated nerve ending |
| outermost layer of epidermis with many layers of dead cells | stratum corneum |
| Means layer | stratum |
| fibers that provide strength to skin | collagen |
| fibers in skin that provides flexibility | elastin |
| Cells that produce collagen and elastin | fibroblasts |
| receptors for pain | free nerve endings |
| secretion to keep eardrum pliable | cerumen |
| secretion to keep skin pliable | sebum |
| lipid substance we call oil | sebum |
| structure that produces oil for skin | sebaceous gland |
| mechanism of heat loss from the skin depends on this process | evaporative cooling from sweat |
| layers of epidermis separate and cause this | blister |
| skin thickens due to increased pressure | callus |
| What stimulates increased melanin production | UV radiation |
| These structures detect pressure, cold and heat | encapsulated nerve endings |
| blood vessels narrow to keep in heat | vasoconstriction |
| blood vessels expand to give off hear | vasodilation |
| The layer of epidermis that prevents entry of pathogens | stratum corneum |
| Layer of epidermis with keratinocytes and melanocytes | stratum corneum |
| Layer of epidermis that undergoes mitosis | stratum germinativum |
| Process of water evaporating and taking extra heat energy with it | evaporative cooling |
| Describe process used to produce vitamin D | cholesterol in skin receives UV radiation to be converted into vitamin D |
| Purpose of vitamin D | allows kidneys to make hormone that instructs calcium to enter the bones |
| Effect of heat on blood vessels | vasodilation |
| effect of cold on blood vessels | vasoconstriction |
| effect of stress on blood vessels | vasodilation in extremeties vasoconstriction in body core |
| glands that produce sweat | sudoriferous |
| glands that produce oil for skin | sebaceous |
| glands that produce ear wax | ceruminous glands |
| uneven junction between epidermis and dermis | papillary layer |
| First layer containing vascular elements (capillaries) | papillary |
| meaning of avascular | not vascular - no blood vessels |
| small arteries | arterioles |
| small veins | venules |
| connects dermis to underlying tissue (often muscle) | subcutaneous |
| connects arteries to veins | capillaries |
| loss of body fluids | dehydration |
Created by:
charla.cornwell2
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