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BIO101: CH6 Obj. 2+3

QuestionAnswer
Dendritic (Langerhans) Cells spinosum; Phagocytes; protect skin and underlying tissues from infection
Tactile (Merkel) Cells basale; sensory receptors for light touch
Melanocytes basale; Melanin is distributed to keratinocytes, through long cytoplasmic projections to protect from UV radiation (DNA damage, fibroblast damage, skin cancer)
Papillary layer thin; Superficial layer; Areolar connective tissue; Contains projections called dermal papillae; Binds epidermis to underlying tissues and forms our fingerprints
Reticular layer thick; Deeper layer; Dense irregular connective tissue
Environmental Factors Sunlight, UV light from sunlamps, X-rays
Physiological Factors Oxygenation in blood of dermal blood vessels: pinkish, cyanosis; Vasodilation/vasoconstriction of dermal blood vessels; Accumulation of carotene pigment from diet; Jaundice
Created by: jullian18
 

 



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