Hole's Anatomy Chapter 7 Integumentary System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Epidermis | Outer layer of skin
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| Dermis | Middle Layer of skin thicker than the
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| Basement Membrane | Seperates Dermis and Epidermis
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| Subcutaneous Layer | Deepest layer of skinContains Most major blood vessels of skin
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| Keratinization | when strands of tough fibrous waterproof keratin proteins are synthesized and stored within a cell.
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| Calluses/ Corns | Increased thickness of skin where layers are often rubbed away.
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| Stratum Corneum | Outtermost layer of epidermis Made of layers of keratinized dead cells that are flattened and nonnucleated
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| Stratum Lucidum | Between Stratum Corneum and Stratum granulosum on soles and palms Appear Clear nuclei organelles and cell membranes are no longer visible
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| Stratum Granulosum | Beneath stratum corneum3-5 layers of flattened granular cells that contain shrunken fibers of keratin and shriveled nuclei
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| Stratum Spinosum | Beneath Stratum GranulosumMany Layers of cells with centrally located large oval nuclei and developing fibers of keratin cells becoming flattened
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| Stratum Basale | Deepest Layer Single row of cuboidal or columnar cells that divide and growincludes melanocytes
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| Melanocytes | Pigmented cells
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| Cytocrine Secretion | Process of melanocytes sharing pigment with epithelial cells through their extensions
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| Hair Follicle | tubelike depression that hair grows from
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| Hair Root | Portion of hair embedded in skin
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| Eumelanin | brownish black melanocytes
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| Pheomelanin | redish yellow melanocytes
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| Albanism | Condition of lacking melanin altogether
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| Nails | Protective coverings on the end of fingers and toes
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| Nail Bed | Surface layer of skin
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| Nail Plate | Overlays Nail bed
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| Lunula | Whitish thickened have moon shaped region of nail
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| Sebaceous Glands | Holocrine glands that produce globules of a fatty material that accumulate, swelling and bursting of cellsKeep hair soft pliable and waterproofNear or connected to hair follicles
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| Sebum | mix of cellular debris and fatty material
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| Sweat Glands | glands that secreat sweat
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| Eccrine Glands | Assist in body coolingUsed as part of Excretory function
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| Appocrine Glands | Secrete fluid and have a scent do to skin bacteria Activated at puberty
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| Radiation | Infared heat rays escape from warmer surfaces to cooler surroundings
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| Convection | Continual circulation of air over a warm surface
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| Evapoation | Sweat released fluid evaporates and carries heat away from skin cooling
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| Hypothermia | Lower than normal body temperature
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| Hyperthermia | Increased body temperature higher than normal
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| UV Lights | darken skin may cause cancer
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| Cyanosis | oxygen in blood concentration is lowered and skin looks bluish
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| Inflamation | normal response to injury or stress
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| Growth factors | Stimulate certain cells to divide
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| Scar | darker connective tissue left after a cut
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| First Degree Burn | only burnt through first layer of skin
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| Second degree Burn | Burnt through dermis
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| Third Degree Burn | Burnt through all layers of skin
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