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27 Cards in this Set
- Front
- Back
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periosteum
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a tough layer of connective tissue surrounding bone
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bone marrow
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a soft tissue found in cavities of bones
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yellow marrrow
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made up of fat cells
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red marrow
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produces red blood cells, some white blood cells, and cell fragments called platelets
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cartilage
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a network of protein fibers including both touch collagen and flexible elastin
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ossification
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a process of bone formation in which cartilage is replaced by bone
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joint
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a place where one bone attaches to another bone
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ligaments
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hold bones together in a joint
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osteoporosis
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caused by a loss of calcium
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myosin
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a protein in thick filaments
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actin
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a protein in thin filaments
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tendons
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touch connective tissue; pull bones making them work like levers
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epidermis
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outer layer of the skin
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dermis
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inner layer of the epidermis
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hypodermis
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older cells that become fattened and their organelles disintegrate
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keratin
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a tough, fibrous protein
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melanin
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a dark, brown pigment
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hair follicle
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tubelike pockets of epidermal cells that extend into the dermis
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sweat glands
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produces perspiration to cool body
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sebaceous (oil ) glands
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produces oil to keep keratin-rich epidermis flexible and waterproof
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erythrocytes
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red blood cells
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hemoglobin
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iron-containing protein found in the red blood cells that help the oxygen bind
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leukocytes
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white blood cells
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lymphocytes
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a special class of white blood cells that produce antibodies to help destroy pathogens
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platelets
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each fragment of cytoplasm is enclosed in a piece of cell membrane and released into the bloodstream as a platelet
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point of origin
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the muscle attached to a bone that remains stationary during muscle contraction
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point of insertion
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the muscle attached to a bone that moves when the muscle contracts
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