1. Copyright © 2005 Mosby, Inc. All rights reserved. 1 Chapter 4 Integumentary System

2. Copyright © 2005 Mosby, Inc. All rights reserved. 2 OBJECTIVES Identify organs and structures of the integumentary system Define and spell the word parts Build and analyze medical terms using word parts Define, pronounce, and spell the disease and disorder, diagnostic, surgical, and complementary terms for the integumentary system Interpret the meanings of the abbreviations Read medical documents and interpret medical terminology contained in them

3. Copyright © 2005 Mosby, Inc. All rights reserved. 3 Integumentary System Function The integumentary system comprises the skin, nails, and glands. The skin forms a protective covering that when unbroken prevents entry of bacteria and other invading organisms. The skin also protects the body from water loss and from damaging effects of ultraviolet light. Other functions include regulation of body temperature and synthesis of vitamin D.

4. Copyright © 2005 Mosby, Inc. All rights reserved. 4 Structure of the Skin

5. Copyright © 2005 Mosby, Inc. All rights reserved. 5 Cross Section of the Skin

6. Copyright © 2005 Mosby, Inc. All rights reserved. 6 Major Structures of the Skin epidermis: outer layer of skin keratin: horny, or cornified, layer composed of protein melanin: color, or pigmentation, of skin dermis (also called “true skin”): the inner layer of skin

7. Copyright © 2005 Mosby, Inc. All rights reserved. 7 Major Structures of the Skin (cont’d) sudoriferous glands: tiny, coiled, tubular structures that emerge through pores on skin’s surface sebaceous glands: secrete sebum (oil) into the hair follicles, where the hair shafts pass through the dermis

8. Copyright © 2005 Mosby, Inc. All rights reserved. 8 Accessory Structures of the Skin hair: compressed, keratinized cells that arise from hair follicles (sacs that enclose the hair fibers) nails: originate in the epidermis; found on the upper surface of the ends of the fingers and toes

9. Copyright © 2005 Mosby, Inc. All rights reserved. 9 Combining Forms for the Integumentary System cutane/o, derm/o, dermat/o hidr/o kerat/o onych/o, ungu/o seb/o trich/o

10. Copyright © 2005 Mosby, Inc. All rights reserved. 10 Combining Forms Commonly Used with Integumentary System Terms aut/o bi/o coni/o crypt/o heter/o myc/o necr/o pachy/o rhytid/o staphyl/o strept/o xer/o

11. Copyright © 2005 Mosby, Inc. All rights reserved. 11 Prefixes epi- intra- para- per- sub-

12. Copyright © 2005 Mosby, Inc. All rights reserved. 12 Suffixes -coccus -ectomy -ia -itis -malacia -opsy -phagia -plasty -rrhea -tome

13. Copyright © 2005 Mosby, Inc. All rights reserved. 13 Disease and Disorder Terms Built From Word Parts dermatitis dermatoconiosis erythroderma hidradenitis leukoderma onychocryptosis pachyderma xeroderma

14. Copyright © 2005 Mosby, Inc. All rights reserved. 14 The -a Ending The -a ending in the terms “pachyderma,” “xeroderma,” “erythroderma,” “leukoderma,” and “xanthoderma” is a noun suffix and has no meaning

15. Copyright © 2005 Mosby, Inc. All rights reserved. 15 Disease and Disorder Terms Not Built From Word Parts abrasion abscess cellulitis contusion eczema gangrene herpes zoster impetigo

16. Copyright © 2005 Mosby, Inc. All rights reserved. 16 Disease and Disorder Terms Not Built from Word Parts (cont’d) Kaposi sarcoma laceration lesion onychomycosis psoriasis tinea percutaneous lesion and cancers of the skin

17. Copyright © 2005 Mosby, Inc. All rights reserved. 17 Common Skin Disorders Tinea.Dermatitis.

18. Copyright © 2005 Mosby, Inc. All rights reserved. 18 Cancers of the Skin Basal cell carcinoma. Squamous cell carcinoma. Melanoma.

19. Copyright © 2005 Mosby, Inc. All rights reserved. 19 Surgical Terms Built from Word Parts biopsy dermatoautoplasty dermatoheteroplasty dermatoplasty onychectomy rhytidectomy rhytidoplasty

20. Copyright © 2005 Mosby, Inc. All rights reserved. 20 Complementary Terms Built from Word Parts dermatologist dermatome epidermal intradermal keratogenic necrosis percutaneous staphylococcus streptococcus ungual

21. Copyright © 2005 Mosby, Inc. All rights reserved. 21 (grapelike clusters) / cv / (berry-shaped) bacteria

22. Copyright © 2005 Mosby, Inc. All rights reserved. 22 (twisted chains) / cv / (berry-shaped) bacteria

23. Copyright © 2005 Mosby, Inc. All rights reserved. 23 Complementary Terms Not Built from Word Parts adipose albino allergy cicatrix cytomegalovirus (CMV) debridement decubitus ulcer dermabrasion

24. Copyright © 2005 Mosby, Inc. All rights reserved. 24 Complementary Terms Not Built from Word Parts (cont’d) diaphoresis ecchymosis edema erythema jaundice keloid leukoplakia pallor

25. Copyright © 2005 Mosby, Inc. All rights reserved. 25 Burn Keloid

26. Copyright © 2005 Mosby, Inc. All rights reserved. 26 Abbreviations bx BCC CMV subq SLE staph strep SqCCA