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Cards In This Set
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cells thought to function in the sensation of touch
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Merkel cells
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anabnormal thickening of the epidermis
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callus
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produce the protein that helps protech the skin and underlying tissues from light,heat,microbes, and many chemicals
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keratinocytes
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cells that arise from red bone marrow, migrate to the epidermis, and participate in immune responses
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Langerhans cells
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produce a pigment that contributes to skin color and absorbs ultraviolet light
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melanocytes
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located in the dermis, they function in the sensations of warmth, coolness, pain, itching, and tickling
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free nerve endings
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associated with hair follicles, these secrete an oil substance that helps prevent hari from becoming brittle, prevents evaporation of water from the skins surface and inhibits the growth of certain bacteria
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Sebaceous glands
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release a lipid-rich secretion that functions as a water-repellant sealant in the stratum granulosum
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lamellar granules
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pressure-sensitive cells found mostly in the subcutaneous layer
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pacinian (lamellated) corpuscles
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a fatty substance that covers and protects the skin of the fetus from the constant exposure to amniotic fluid
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vermix caseosa
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smooth muscles assoicated with the hair follicles;when contracted, they pull the hair shafts perpendicular to the skin's surface
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arrector pili
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epithelial cells migrate under scab to bridge the wound; formation of granulation tissue
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migratory phase
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sloughing of scab; reorganization of collagen fibers;blood vessels return to normal
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maturation phase
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vasodilation and increased permeability of blood vessels to deliver cells involved phagocytosis;clot formation
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inflammatory phase
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extensive growth of epithelial cells beneath scab;random deposition of collagen fibers; continued growth of blood vessels
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proliferative phase
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