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Related Flashcards
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Cards In This Set
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What 3 parts is the skin composed of?
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Epidermis, dermis, hypodermis
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Epidermis
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Surface of skin
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Dermis
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Next deep layer after Epidermis; contains connective tissue
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Hypodermis
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Subcutaneous layer
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What are the 5 layers of the Epidermis?
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Stratum: corneum, lucidum, granulosum, spinosum, basale
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Stratum Corneum
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Most superficial layer of flat, dead cells filled with protein keratin that protects against heat, pathogenic microorganisms, chemicals, and light (in Epidermis)
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Stratum Lucidum
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After the corneum; clear, flat cells with a prekeratin substance (eleidin) that is found primarily in the palms of hands and soles of feet
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Stratum Granulosum
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After lucidium; contains flattened cells containing keratohyalin (later will become keratin)
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Stratum Spinosum
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Layer after granulosum; large layer where keratin is produced in many of these cells
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Stratum Basale
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Deepest layer (after spinosum); single layer of cuboidal and columnar cells that undergo mitosis and become the cells of the more superficial layers; also called Stratum Germinativum
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What does the dermis contain?
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Many fibers of collagen
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What is the most superficial region of the dermis? What is the remainder of the dermis?
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Popillary region; dermal layer
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What is within the dermal layer?
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Number of sebaceous glands (oil glands that are connected to hair follicles)
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What are other glands in the dermis?
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Sweat glands ("sudoriferous glands"): deliver their watery secretions (sweat)
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Where does the sweat go from the sweat glands?
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To the sweat gland ducts then to the sweat gland pores
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