5. The skin possesses a number of amazing protective properties, and one of the most notable...

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Biology

5. The skin possesses a number of amazing protective properties,and one of the most notable is skin coloration as a protectionagainst U.V. irradiation. Briefly, describe the anatomical,biochemical and physical means by which the skin adapts to U.V.radiation. How does light (U.V.) potentially disrupt cellularfunction and how is melanin poised to protect against damage.Describe four features of melanin as it relates to interpersonaldifferences between individuals, and what impact does this have onrates of skin cancer. Describe at least one method used toassociate U.V. irradiation with either skin damage or repair. (10points)

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Soln 1 The skin is the largest organ of the body It is organized into two primary layers epidermis and dermis which are made up of epithelial mesenchymal glandular and neurovascular components The epidermal biology and physical characteristics of skin play an enormous role in resistance to UV radiation The various anatomical physical and biochemical means are as listed below 1 Keratinocytes are the most abundant cells in the epidermis and are known for their expression of cytokeratins and formation of desmosomes and tight junctions with each other to form an effective physiochemical barrier 2The dermis derived from mesoderm contains abundant immune cells and fibroblasts which acts as an physiological barrier in the skin 3Besides the creation of See Answer

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