Integumentary System Vocabulary

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