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Unformatted text preview: papillary & reticular layers
• Papillary= areolar tissue in/near dermal papillae; 1/5 thickness
of dermis; allows for movement of WBC’s thru tissue
• Reticular layer= deeper 4/5; dense irregular c.t.
• Small clusters of adipocytes common
Stretch marks form when collagen fibers tare (=striae) Hypodermis & Skin color
Hypodermis= subcutaneous (superficial fascia)
• Indistinct boundary btw dermis but more areolar/adipose
• Subcutaneous fat= adipose tissue dominates
• 8% more in women & differs in distribution • Binds skin to underlying tissues, pads body, energy reservoir,
• Injections into hypo as highly vascular 3 pigments form skin color= hemoglobin, melanin,
• Hemoglobin= red pigment of red blood cells
• Visible through dermal bld vessels; combines w/ ‘white’ of collagen
fibers to produce caucasian skin • Carotene= acquired from yellow/orange pigments of vegies &
• Can [ ] in stratum corneum & subcutaneous fat • Melanin= a...
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- Fall '08