Integumentary System Vocabulary

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Across
  1. 3. hair, course pigmented hair (except in the elderly)
  2. 4. this layer of the epidermis consists of only three or four flattened layers of cells
  3. 7. specialized cells that produce the protein keratin
  4. 10. gland that secrete sebum onto the shaft of the hair
  5. 11. all the _____ of the skin are located in the dermis where they are physically supported and receive nutrients
  6. 15. the primary function of hair is ____
  7. 17. the layer of the skin that contains many sweat glands, oil-secreting glands, nerve endings, and hair follicles
  8. 21. a hereditary condition caused when the epidermis lacks the enzyme tyrosinase which converts tyrosine into melanin
  9. 23. the dead portion of the hair
  10. 24. the stratum _____ is composed of several layers of cells with centrally located, large, oval nuclei and spine-like processes
  11. 25. is a fine, silky fetal hair. It is usually seen only on premature infants
  12. 27. a condition of excessive body and facial hair
Down
  1. 1. highly specialized sensory receptors that respond to heat, cold, pressure, touch, vibration and pain
  2. 2. short, fine hair that replaces lanugo.
  3. 5. the largest organ on the body
  4. 6. form the base for the friction ridges on the fingers and toes
  5. 8. hardened, tightly packed cells surrounding the medulla
  6. 9. a yellowish pigment found in certain plant products, such as carrots which is thought to account for the yellow-tan color of skin
  7. 12. gland, excrete perspiration, or sweat, onto the surface of the skin
  8. 13. the clear layer of the epidermis that exists only in the lips and the thickened skin of the soles and palms is called the stratum ___
  9. 14. the layer of the epidermis composed of 25 to 30 layers of flattened, scale-like cells is called the stratum ______
  10. 16. superficial protective layer of the skin
  11. 18. specialized epithelial cells that synthesize the pigment melanin
  12. 19. protein responsible for toughening and waterproofing the skin
  13. 20. it is the oxygen-binding pigment found in red blood cells
  14. 22. this layer of the epidermis composed of 4-types of cells: melanocytes, keratinocytes, tactile cells and nonpigmented granular dendrocytes
  15. 26. the enlarged base of the root located in the hair follicle
  16. 28. brown-black pigment produced in the melanocytes of the stratum basale that provide a protective barrier to the UV radiation in sunlight