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17 Cards in this Set
- Front
- Back
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Papillary Layer
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Areolar connectie tissue with collagen and elastic fibers and blood vessels.
Capillary loops, meissner's corpuscles, nerve endings |
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Reticular Layer
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80% of thickness of Dermis. collagen fibers provide strength and resilency. elastic fibers provide recoil.
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Friction Ridges
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Epidermal ridges - fingerprints
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Cleavage Lines
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Collegan fibers arranged in bundles form tention lines.
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Carotene
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yellow to orange. palms and soles of feet
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Hemoglobin
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gives pink hue to skin
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Layers of Dermis
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Papillary and Reticular
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Vellus
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Fine peach fuzz hair in children and females
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Terminal
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Coarse hair found in eyebrows and pubic region
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Chemical Barriers
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Low PH secretions (acid mantle) and defensins retard bacterial activity
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Physical/Mechanical Barriers
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Keratin and glycolipids block most water and water soluble substances
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Biological
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Dendrictic cells, macrophages, and DNA
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Body Temperature Reglulation
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Like a car radiator; more blood in papillary layer when hot, less blood in papillary layer when cold
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Ectoderm
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Where epidermis is made
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Mesoderm
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Where dermis and hypodermis is made
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Lanugo Coat
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Covering delicate hair of fetus. 5th - 6th month
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Vernix Caseosa
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Sebacous glad secretion; protects skin of fetus.
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