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Carl Christensen, PhD Integumentary System (Skin) Biol. 2304 - Human Anatomy 1. Name the epidermal layers (from superficial to deep) in thin and thick skin. Thin Thick 2. What is the function of the deepest epidermal layer? 3. What epidermal layer is found only in thick skin? 4. What does “granulosum” refer to in “stratum granulosum?” 5. Epidermal cells produce a protein called ________________ that waterproofs & protects the skin. 6. Why does the stratum corneum slough off? (2 reasons) 7. The pigment in skin cells that protects them from UV rays is called _____________. How does this pigment protect the cells? 8. What are the two regions of the dermis? 9. What causes fingerprints? 10. What type of tissue is found in the epidermis? 11. What is the main tissue type in the dermis? tissue. 12. What major layer is found below the dermis? This layer contains a lot of 13. What is the technical name of the oil glands? 14. Pressure receptors are called . 15. Light touch receptors are called . 16. Phagocytic, white blood cells in the skin are called . 1 17. What is the importance of the skin in the synthesis of vitamin D? 18. What is the function of calcitriol? 19. Why is vitamin D considered a hormone? 20. How does the skin help regulate body temperature? (3 ways) 21. What causes goose bumps? What is the function of goose bumps? 22. Glands that secrete "ear wax" are called . 23. Describe 3 types of skin cancer. Which is the most common? 24. Which of the 3 types of cancer is the most dangerous? Why? 25. How does the skin protect against the entry of bacteria into the body? (4 ways) 26. What causes the skin to wrinkle? 27. Name the 3 types of epithelial membranes. . 2 28. Match the epithelial membrane with its description. a.) cutaneous membrane b.) serous membrane c.) mucous membrane stratified squamous or simple columnar epithelium on top of a layer of connective tissue called the lamina propria described as a keratinized stratified squamous epithelium attached to a thick layer of dense irregular connective tissue described as mesothelium a dry membrane exposed to the air moist membranes that found in ventral body cavities consists of a simple squamous epithelium resting of a thin layer of areolar connective tissue. Skin lines the respiratory tract, digestive tract, oral cavity, urinary tract, vagina 29. Match the serosa with its description a. parietal pericardium d. visceral pleura b. visceral pericardium e. parietal peritoneum c. parietal pleura f. visceral peritoneum Lines the pleural cavity Covers the lungs Lines the pericardial cavity Covers the heart Lines the abdominopelvic cavity Covers the viscera 3