4_Integumentary System_outline_filledin (1).docx

Melanoma originates in malanocytes from mole spreads

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Melanoma- originates in malanocytes from mole, spreads quickly so is most fatal, can be detected using ABC’s (asymmetry, borders, color) Review questions from the book: 1. What is the major histological difference between thick skin and thin skin? Where on the body is each type found? 2. How does the skin help to adjust body temperature?
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3. List the five layer of epidermis from deep to superficial. What are the distinctive features of each layer? Which layer is often absent? 4. What are the two layers of the dermis? What type of tissue composes each layer? 5. How do merocrine and apocrine sweat glands differ in function? 6. What other type of gland is associated with hair follicles? How does its mode of secretion differ from that of sweat glands? 7. A third-degree burn may be surrounded by painful areas of first- and second-degree burns, but the region of the third-degree burn is painless. Explain the reason for this lack of pain. 8. What types of cells are involved in each type of skin cancer? 9. Which type of skin cancer is the most dangerous? 10. What are the differences between first-, second-, and third-degree burns? 11. Why is it important for the epidermis to be effective, but not too effective, in screening out UV radiation?
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