Exercise 7
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Stratum Lucidum
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Layer of translucent cells in thick skin containing dead keratinocytes
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Stratum Corneum, Stratum Lucidum
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Two layers containing dead cells
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Papillary layer
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Dermal layer responsible for fingerprints
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Dermis as a whole
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Vascular region of the skin
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Epidermis as a whole
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Major skin area as a whole that produces derivatives
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Stratum Basale
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Epidermal layer exhibiting the most rapid cell division
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Stratum Corneum
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Layer including scalelike dead cells, full of keratin, that constantly slough off
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Stratum Spinosum
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Layer of mitotic cells filled with intermediate filaments
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Dermis as a whole
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Has abundant elastic and collagenic fibers
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Stratum Basale
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Location of melanocytes and tactile cells
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Stratum Spinosum
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Area where weblike pre-keratin filaments first appear
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Papillary Layer
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Layer of areolar connective tissue
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Laminated
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...granules contain glycolipids that prevent water loss from the skin
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Fibroblasts
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Fibers in the dermis are produced by
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Sebaceous and apocrine
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Glands that respond to rising androgen levels
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Epidermal dendritic
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Phagocytic cells that occupy the epidermis
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Tactile
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A unique touch receptor formed from a stratum basale cell and a nerver fiber
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Stratum Lucidum
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What layer is present in thick skin but not in thin skin
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Desmosomes
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What cell-to-cell structure hold the cells of the stratum spinosum tightly together
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Vitamin D3
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What substance is manufactured in the skin and plays a role in calcium absorption elsewhere in the body?
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Sebaceous Glands
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Produces an accumulation of oily material that is known as a blackhead
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Arrector Pili
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Tiny muscles, attached to hair follicles, that pull the hair upright during fright or cold
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Sweat Gland - Eccrine
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Sweat glands with a role in temperature control
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Hair Follicle
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Sheath formed of both epithelial and connective tissues
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Sweat Gland - Apocrine
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Less numerous type of sweat-producing gland; found mainly in the pubic and axillary regions
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Sebaceous Glands
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Found everywhere on the body except the palms of hands and soles of feet
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Nail and Hair
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Primarily dead/keratinized cells
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Cutaneous Receptors
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Specialized nerve endings that respond to temperature, touch, etc.
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Sebaceous Glands
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Secretes a lubricant for hair and skin
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Nail
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\"Sports\" a lunule and a cuticle
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Loops, Arches, and Whorls
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Name the three common fingerprint patterns
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Starch
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What substance in the bond paper does the iodine painted on the skin react
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Nervous
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What organ system controls the activity of the eccrine sweat glands?
