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Chapter 12

The Integumentary System

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Overview of Structures, Combining Forms, and Functions

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© 2009 Delmar, Cengage Learning

Skin

• Primary Functions – First line of defense for the immune system.

– Waterproofs the body.

– Major receptor for the sense of touch.

• Related Combining Forms– cutane/o

– dermat/o, derm/o

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Structures of the Skin

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Sebaceous Glands

• Primary Functions – Secrete sebum (oil) to lubricate the skin.

– Discourage the growth of bacteria on the skin.

• Related Combining Form– seb/o

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Sweat and Sebaceous Glands

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Sweat Glands

• Primary Functions – Secrete sweat to regulate body temperature and water content.

– Excrete some metabolic waste.

• Related Combining Form– hidr/o

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Hair

• Primary Function – Aids in controlling the loss of body heat.

• Related Combining Forms– pil/i, pil/o

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Nails

• Primary Function – Protect the dorsal surface of the last bone of each finger and

toe.

• Related Combining Forms– onych/o

– ungu/o

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Structures of the Fingernailsand Toenails

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Animations

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© 2009 Delmar, Cengage Learning

The Skin

Click to play animation

[Insert Skin animation]

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Burns

Click to play animation

[Insert Burns animation]

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Answers to Learning Exercises

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© 2009 Delmar, Cengage Learning

Chapter 12 Answers

Matching Word Parts 1

12.1. bi/o

12.2. urtic/o

12.3. erythr/o

12.4. hidr/o

12.5. rhytid/o

Matching Word Parts 2

12.6. melan/o

12.7. lip/o

12.8. kerat/o

12.9. pedicul/o

12.10. dermat/o

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Chapter 12 Answers

Matching Word Parts 3

12.11. xer/o

12.12. myc/o

12.13. hirsut/o

12.14. onych/o

12.15. seb/o

Definitions

12.16. cellulitis

12.17. dysplastic nevi

12.18. alopecia areata

12.19. hematoma

12.20. diaphoresis

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Chapter 12 Answers

Definitions

12.21. cicatrix

12.22. bulla

12.23. debridement

12.24. second-degree

12.25. verrucae

Matching Structures

12.26. keratin

12.27. unguis

12.28. sebaceous glands

12.29. mammary glands

12.30. dermis

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Chapter 12 Answers

Which Word?

12.31. onychocryptosis

12.32. impetigo

12.33. laceration

12.34. basal cell

12.35. necrotizing fasciitis

Spelling Counts

12.36. psoriasis

12.37. eczema

12.38. abscess

12.39. onychia

12.40. scleroderma

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Chapter 12 Answers

Abbreviation Identification

12.41. basal cell carcinoma12.42. incision and

drainage12.43. lupus erythematosus12.44. malignant

melanoma12.45. squamous cell

carcinoma

Term Selection

12.46. granuloma

12.47. pediculosis corporis

12.48. erythema

12.49. scales

12.50. carbuncle

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Chapter 12 Answers

Sentence Completion

12.51. purulent

12.52. onychomycosis

12.53. gangrene

12.54. melanosis

12.55. urticaria

Word Surgery

12.56. rhytid, -ectomy

12.57. onych/o, myc, -osis

12.58. follicul, -itis

12.59. prurit, -us

12.60. ichthy, -osis

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Chapter 12 Answers

True/False

12.61. True

12.62. False

12.63. True

12.64. False

12.65. True

Clinical Conditions

12.66. sclerotherapy

12.67. albinism

12.68. hematoma

12.69. abrasion

12.70. petechiae

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Chapter 12 Answers

Clinical Conditions

12.71. scabies

12.72. Mohs surgery

12.73. blepharoplasty

12.74. abscess

12.75. sleep hyperhidrosis

Which Is the Correct Medical Term?

12.76. paronychia

12.77. comedo

12.78. psoriasis

12.79. koilonychia

12.80. nevi

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Chapter 12 Answers

Challenge Word Building

12.81. onychomalacia

12.82. hypohidrosis

12.83. rhinoplasty

12.84. onychoma

12.85. melanopathy

12.86. onychectomy

12.87. anonychia

12.88. dermatopathy

12.89. mycosis

12.90. melanodermatitis

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Chapter 12 Answers

Labeling Exercises

12.91. cyst

12.92. pustule

12.93. vesicle

12.94. bulla

12.95. ulcer

12.96. epidermis

12.97. dermis

12.98. subcutaneous

12.99. sebaceous

12.100. sweat