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18 Cards in this Set
- Front
- Back
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Skin: is the _____ system of the body
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largest
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FUNCTIONS OF SKIN
-_____ you from _____, _____, and _____ -_____ _____ -_______ of salts, water, wastes -_____ _____ needed to extract calcium -_____ ______ (touch, pressure) |
-protect from infection, desication, UV rays
-synthesizes vitamin D -detects sensations |
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COMPONENTS OF SKIN
outer ____: _____ tissue inner _____: _____ tissue |
epidermis: epithelial
dermis: connective |
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TYPES OF EPIDERMIS
___ skin: covers ___ of the body ____ skin: covers the ____ and ____ |
thin: most of body
thick: palms and soles |
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DERMIS
source of ____ and _____ for the ______ |
blood and nutrients for epidermis
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HYPODERMIS
___ a part of the skin -____ to the dermis |
not
deep |
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MAJOR CELLS TYPES OF EPIDERMIS
______: the most _____ cells ______: secrete the pigment ____ ______ ____: ____-____ cells for immune response |
Keratinocytes: most abundant
Melanocytes: melanin Langerhans cells: antigen-presenting cells |
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BASAL LAYER
-contains the ___ ___ for keratinocytes -this is where ____ occurs -cells are _____ to a ____ ____ |
-stem cells
-mitosis -attached to basement membrane |
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SPINY LAYER
-contains two ten layers of keratinocytes attached to each other by many ____ ____ -these connections look like _____ |
-adhering junctions
-spines |
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GRANULAR LAYER
-keratinocytes are producing significant amounts of _____ -they now take on a _____ appearance |
-keratin
-granular |
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LUCID LAYER
-the _____ layer -contains 1-5 layers of ____ ______ |
-clear
-dying keratinocytes |
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CORNIFIED LAYER
-contains 10-100s of ___ ___ -layers _____ __ here |
-dead cells
-slough off |
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SKIN COLOR
depends on: -the pigments _____ -_____ -_____ |
carotene
melanin blood |
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ILLNESS AND SKIN COLOR
_____: buildup of bile _____: reduction in blood flow _____: loss of color |
jaundice
cyanosis vitiligo |
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HAIR FUNCTIONS:
-____ and _____ -associated with _____ receptors |
-protects and insulates
-touch |
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NAILS AND NAIL PRODUCTION
-nails _____ fingers and toes |
protect
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EXOCRINE GLANDS
____ glands: ____ are merocrine glands -found in both ___ and ___ skin -_____ water and ions apocrine glands: found in ____ regions -______ apical portion of cell with water and ions -associated with ___ ___ -activate at _____ |
sweat glands: most
-thick and thin skin -secrete -axillary -secrete -body odor -puberty |
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EXOCRINE GLANDS(2)
______ glands: -___ cell secreted -associated with ___ skin only -mainly associated with ___ _____ -begin to function at _____ -______ and protect the epidermis |
Sebaceous
-whole cell secreted -thin skin only -hair follicles -puberty -lubricate |
