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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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