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| stratified squamous epithelial tissue |
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| dense irregular connective tissue |
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| loose connective tissue underneath dermis--connects dermis to muscle or bone |
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| Increase blood flow to epidermis |
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| What are fingerprints formed by? |
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| What is the purpose of fingerprints? |
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| Increase friction with things we touch |
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| Network of protein fibers which run beneath the papillae and give skin its strength in all directions |
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| What forms lines of cleavage? |
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| The direction the collagen fibers lie. |
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| Nerves that wrap around hair |
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| How are skin cells replaced after a burn? |
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| Hair follicles are made of epithelial tissue as well, so they rebuild the skin through mitosis |
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| causes hair to stand on end |
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| What makes up the hypodermis? |
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| Adipose tissue (insulates) and loose connective (connects skin to muscle or bone) |
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| Deepest layer of epidermis: |
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| What cells produce melanin? |
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| Where are melanocytes found? |
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| Stratum basale and stratum spinosum |
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| Uncontrolled mitosis of melanocytes |
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| In what layer do the cells begin keratinizing? |
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| What is the thick skin found on the feet? |
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| What is the outermost layer of epidermis? |
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| Process of dead cells flaking off |
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| What are the layers of the epidermis from bottom to top? |
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| Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum |
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| Where is hard keratin found? |
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| Where is soft keratin found? |
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| Outer layer of hair, contains hard keratin |
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| Pocket from which hair grows |
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| Two layers that make up hair follicle: |
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| internal and external epithelial root sheath |
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| What covers the hair follicle? |
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| Mass of undifferentiated cells |
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| When do hair cells differentiate? |
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| Why is some hair shorter/longer? |
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| Different lengths of growth/rest stages |
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| Produce sweat and put it on surface of skin |
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| Glands in armpits and pubic region |
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| Functions of the skeleton |
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| Support, protection, movement, storage, hemopoiesis |
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| What minerals does the skeleton store? |
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| Calcium, magnesium, phosphorus |
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| About as wide as it is long: carpals |
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| Thin and usually curved: Ribs |
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| Small, round: patella, bones that develop inside tendons |
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| dense bone matrix enclosing only a few small spaces; makes up epiphysis |
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| Found at end of bone; made of spongy bone |
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| Made of many small spaces or cavities surrounding the bone matrix |
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| Between diaphysis and epiphysis; made of hyaline cartilage when a person is young, hardens into bone when done growing |
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| hylaline cartilage that covers the end of a bone in a joint |
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| runs down center of diaphysis; contains red bone marrow in a young person |
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| supports and protects head, neck and trunk (skull, ribcage, vertebral column) |
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| attaches to axial skeleton and contains limbs (pectoral girdle, pelvic girdle, upper and lower limbs) |
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| Hollowed out space in a bone |
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