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32 Cards in this Set
- Front
- Back
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What are some functions of the skin?
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Protects the body from pathogens. Bacteria Viruses
Helps regulate body temperature, loss of water Contains nerve cells that respond to heat, cold, pain and pressure |
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What are the three layers the skin is made up?
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epidermas dermas hypodermas (subcutaneous tissue)
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The epidermal layer is formed by?
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Squamus Epitheleum
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Specialized cells are called?
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melonocytes
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melonocytes contain pigment called
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melanin
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What are cells filled with a protein keratin called?
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keratinocytes
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What is the death and regeneration cycle called?
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keratinization
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What are keratinocytes accumulated at the first level called?
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basal layer
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What is it called as the keratinocytes push outward and get flattened? And what happens to them?
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Horney cells. They undergo an enzyme function and die.
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What is the last level called where the dead horney cells are?
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stratum corneum
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How long does it take for the keretinocytes to evolve push through the dermis and die?
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6-10 weeks
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What level is the dermis?
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middle layer
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The dermis is composed of two levels. True or False?
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True
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What is the more active level of the dermis called?
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vascularized
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What is the less active level called?
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collagen
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What does the vascularized level do?
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supplies epidermis with nutrients from the blood
It helps regulate body temperature by controlling blood flow through the skin |
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What does the the collagen do?
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Gives skin strength and elasticity
Structurally supports hair and glands |
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Subcutaneous layer is made up of what?
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Connective tissue made up of lipocytes (fat cells)
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What does the subcutaneous layer do?
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insulate body from the cold
cushion deeper tissues and absorb trauma storage for the body's fuel supply |
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What are the two glands?
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sebaceous glands and sweat glands
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Where and what do the sebaceous glands do?
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Near the hair follicle to secrete sebum to lubricate hair and skin
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Where and what do the sweat glands?
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They open up in the pores and secrete sweat which cools the body
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Hair is actually a modified type of skin T or F?
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True
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What are some components of the nail?
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nail plate protect tips and consist of
cuticle epidermis at base lunala moonshaped crescent |
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Which cells help the body against infection?
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Langerhans cells
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What are the three layers of skin?
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dermis epidermis subcutaneous
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What are the tiny projections that fit the dermis to the epidermis?
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papilae
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What is the bulb at the base of the hair called
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root
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what is the sac like pit in the skin called
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follicle
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what protects the skins surface?
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shaft
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What are the three parts of the hair?
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medulla, the soft center
cortex surrounds the medulla main part cuticle the hard outside |
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What are the three parts of the nail
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matrix below the skin
nail plate larger pink part lunula the white crescent |
