anatomy and physiology test bank

Anatomy And Physiology 7th Edition By PattonThibodeau – Test Bank Chapter 6: Skin and Its Appendages Test Bank TRUE/FALSE 1. One of the important functions of the skin is the synthesis of vitamin D. ANS: T DIF: Memorization REF: Page 176 TOP: Functions of the Skin 2. Keratin is an important skin pigment that protects against ultraviolet light. ANS: F DIF: Application REF: Page 167 TOP: Cell Types 3. The hypodermis or superficial fascia is a subcutaneous layer rich in fat and areolar tissue. ANS: T DIF: Memorization REF: Page 172 TOP: Structure of the Skin 4. The subcutaneous layer is also referred to as the superficial fascia. ANS: T DIF: Memorization REF: Page 172 TOP: Structure of the Skin 5. Melanocytes account for approximately 55% of the epidermal cells. ANS: F DIF: Memorization REF: Page 167 TOP: Cell Types 6. During the life of an individual, epidermal tissue is constantly being replaced. ANS: T DIF: Synthesis REF: Page 168 TOP: Epidermal Growth and Repair 7. Turnover time for epidermal tissue can be accelerated by injury. ANS: T DIF: Synthesis REF: Page 168 TOP: Epidermal Growth and Repair 8. Prolonged exposure to the sun causes decreased melanin production. ANS: F DIF: Memorization REF: Page 173 TOP: Skin Color 9. A primary function of the dermal-epidermal junction is to “glue” together the dermis and the epidermis. ANS: T DIF: Memorization REF: Page 170 TOP: Dermal-Epidermal Junction 10. The epidermis is referred to as the true skin. ANS: F DIF: Memorization REF: Page 170 TOP: Dermis 11. Normally about 10% to 12% of all cells in the stratum basale enter mitosis each day. ANS: T DIF: Memorization REF: Page 168 TOP: Epidermal Growth and Repair 12. Both the epidermis and the dermis continually undergo shedding and regeneration. ANS: F DIF: Synthesis REF: Page 168 TOP: Cell Layers 13. Sensory receptors are found in the epidermis. ANS: F DIF: Application REF: Page 169 ( Table 6-1) TOP: Dermis 14. Goose pimples, elevation of the testes, and erection of the nipples result from the contraction of muscles in the dermis. ANS: T DIF: Application REF: Page 171 TOP: Reticular Layer 15. The dermis contains both voluntary and involuntary muscle fibers. ANS: T DIF: Application REF: Page 171 TOP: Reticular Layer 16. Malignant melanoma has been steadily increasing in the United States for the past 20 years. ANS: T DIF: Synthesis REF: Page 185 TOP: Skin Cancer 17. The basic ingredient in the skin that determines skin color is melanin. ANS: T DIF: Memorization REF: Page 172 TOP: Skin Color 18. Vitiligo is an acquired condition that results in loss of pigment in certain areas of the skin. ANS: T DIF: Memorization REF: Page 167 (Box 6-1) TOP: Vitiligo 19. An increase in the enzyme tyrosinase will lead to the destruction of pigment and result in albinism. ANS: F DIF: Synthesis REF: Page 172 | Page 173 TOP: Skin Color 20. Darkening of the skin may be caused by a decrease in the secretion of adrenocorticotropic hormone. ANS: F DIF: Application REF: Page 173 TOP: Skin Color 21. Lanugo is the technical term used for adult body hair. ANS: F DIF: Memorization REF: Page 179 TOP: Hair 22. Terminal hair is the coarse pubic and axillary hair that develops at puberty. ANS: T DIF: Memorization REF: Page 179 TOP: Hair 23. One way to stimulate hair growth is to cut it or shave it. ANS: F DIF: Memorization REF: Page 180 TOP: Hair 24. One of the factors associated with the common type of baldness is the presence of testosterone. ANS: T DIF: Application REF: Page 180 TOP: Hair 25. Growth of nails is the result of mitosis in the stratum germinativum. ANS: T DIF: Memorization REF: Page 180 TOP: Nails 26. The gland that produces the waxy secretion in the external ear canal is a sebaceous gland. ANS: F DIF: Application REF: Page 182 TOP: Ceruminous Glands 27. An increase in sebum secretion in children may lead to increased susceptibility to ringworm. ANS: F DIF: Synthesis REF: Page 184 TOP: Mechanisms of Disease 28. Apocrine sweat glands are the most numerous and widespread sweat glands in the body. ANS: F DIF: Synthesis REF: Page 181 TOP: Sweat Glands 29. There is a more than fivefold increase in the rate of sebum secretion between 10 and 19 years of age. ANS: T DIF: Memorization REF: Page 182 (Box 6-6) TOP: Acne 30. A person with a body temperature of 38° C would need to be treated for hypothermia. ANS: F DIF: Application REF: Page 186 TOP: Mechanisms of Disease 31. When heat must be conserved to maintain a constant body temperature, the dermal blood vessels increase their diameter. ANS: F DIF: Synthesis REF: Page 177 TOP: Heat Loss 32. Shivering is a good example of the body’s attempt to produce more heat. ANS: T DIF: Application REF: Page 177 TOP: Heat Production 33. A person who is shivering would normally have dilated surface blood vessels in the skin. ANS: F DIF: Synthesis REF: Page 177 TOP: Heat Loss 34. Heat loss by the skin is controlled by a positive feedback loop. ANS: F DIF: Memorization REF: Page 178 TOP: Homeostatic Regulation of Heat Loss 35. The body’s temperature control center is located in the hypothalamus. ANS: T DIF: Memorization REF: