The Integumentary System

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The Integumentary System

  1. 1. QUIZQUIZ 1.1. The main part or foundation of a wordThe main part or foundation of a word 2.2. The plane that separates the front from the back.The plane that separates the front from the back. 3.3. Tissues combine to form theseTissues combine to form these 4.4. Suffix meaning inflammationSuffix meaning inflammation 5.5. The transverse plane separates the _____ from theThe transverse plane separates the _____ from the ________.________.
  2. 2. 6.6. TonsillitisTonsillitis 7.7. LeukemiaLeukemia 8.8. CephalgiaCephalgia 9.9. DentalDental 10.10.PostmortemPostmortem
  3. 3. Integumentary SystemIntegumentary System MEDL 2350MEDL 2350 March 3, 2003March 3, 2003
  4. 4. What is the Integument?What is the Integument? • The INTEGUMENTARY SYSTEM includes all theThe INTEGUMENTARY SYSTEM includes all the structures and tissues related to the skin.structures and tissues related to the skin. • This includes:This includes: 1. skin1. skin a. Epidermisa. Epidermis b. Dermisb. Dermis 2. accessory organs2. accessory organs a. Haira. Hair b. Nailsb. Nails c. Glandsc. Glands
  5. 5. • The skin covers the entire body andThe skin covers the entire body and provides protection against injuries,provides protection against injuries, infection, and toxic compounds.infection, and toxic compounds. • The system contains many nerve endingsThe system contains many nerve endings that act as RECEPTORS for pain,that act as RECEPTORS for pain, temperature, touch, and pressure.temperature, touch, and pressure.
  6. 6. Anatomy of the SkinAnatomy of the Skin • Upper layer of skin is called EPIDERMISUpper layer of skin is called EPIDERMIS EPI- means on top ofEPI- means on top of DERMIS means skinDERMIS means skin • The lower layer of skin is called theThe lower layer of skin is called the DERMIS.DERMIS.
  7. 7. The EpidermisThe Epidermis • Is multilayered.Is multilayered. • Contains is superficial layer of dead skinContains is superficial layer of dead skin cells called STRATUM CORNEUM.cells called STRATUM CORNEUM. • The stratum corneum is composed of cellsThe stratum corneum is composed of cells called KERATIN.called KERATIN. • Is AVASCULAR (no blood vessels)Is AVASCULAR (no blood vessels) • Has no nerve tissue (can’t feel pain)Has no nerve tissue (can’t feel pain)
  8. 8. The DermisThe Dermis • Has two distinct layers:Has two distinct layers: 1. Papillary Layer (more superficial)1. Papillary Layer (more superficial) 2. Reticular Layer (deeper)2. Reticular Layer (deeper) • Accessory organs begin the dermis.Accessory organs begin the dermis. • Some of the accessory organs end orSome of the accessory organs end or cross into the epidermis.cross into the epidermis. • The dermis contains blood vessels andThe dermis contains blood vessels and nerve tissue.nerve tissue.
  9. 9. Subcutaneous Fat and SuperficialSubcutaneous Fat and Superficial FasciaFascia • The SubQ fat is found deep to the dermis.The SubQ fat is found deep to the dermis. • It contains the larger blood vessels of theIt contains the larger blood vessels of the skin.skin. • It is composed of adipose (fat) tissue, aIt is composed of adipose (fat) tissue, a form of connective tissue.form of connective tissue. • Deep to the subQ layer is the fascial layerDeep to the subQ layer is the fascial layer that covers the muscles beneath.that covers the muscles beneath.
  10. 10. Combining FormsCombining Forms Adip/oAdip/o Lip/oLip/o Steat/oSteat/o All mean FAT
  11. 11. Adip/osisAdip/osis Lip/oidLip/oid Steat/omaSteat/oma Abnormal condition of fat Resembling fat Tumor of fat
  12. 12. Cutane/oCutane/o Dermat/oDermat/o Derm/oDerm/o skin
  13. 13. SubcutaneousSubcutaneous DermatologyDermatology hypodermichypodermic Pertaining to under the skin Study of the skin Pertaining to under the skin
  14. 14. Hidro/o sweatHidro/o sweat Anhidrosis - abnormal condition of sweatAnhidrosis - abnormal condition of sweat Kerat/o horny tissueKerat/o horny tissue keratosis- - abnormal condition of hard tissuekeratosis- - abnormal condition of hard tissue Myc/o fungusMyc/o fungus Onychomycosis – abnormal condition of fungal toenailsOnychomycosis – abnormal condition of fungal toenails
  15. 15. Onych/oOnych/o OnychomalaciaOnychomalacia softenting of nailssoftenting of nails
  16. 16. Pil/oPil/o Trich/oTrich/o Hair A Pilonidal cyst Is a cyst that pertains to a nest of hair Trichopathy Is a disease of the hair
  17. 17. Xer/oXer/o Means dryMeans dry xerodermaxeroderma means dry skinmeans dry skin
  18. 18. derm / o / tomederm / o / tome An instrument to cut skin
  19. 19. Remember, the dermisRemember, the dermis contains the haircontains the hair follicles, sweatfollicles, sweat glands, andglands, and sebaceous glands (oilsebaceous glands (oil glands)glands)
  20. 20. The term “diaphoresis” is meant to denoteThe term “diaphoresis” is meant to denote excessive sweating.excessive sweating. The combining form for sweat isThe combining form for sweat is hidr/ohidr/o
  21. 21. Don’t get confused!!!Don’t get confused!!! Hidr/o means sweatHidr/o means sweat Hydr/o means waterHydr/o means water
  22. 22. Hidrosis is an abnormal condition of sweatHidrosis is an abnormal condition of sweat that causes blistering and peeling of thethat causes blistering and peeling of the palms and soles.palms and soles. Anhidrosis is an abnormal condition ofAnhidrosis is an abnormal condition of diminished or absent sweat.diminished or absent sweat.
  23. 23. A hidradenoma is aA hidradenoma is a tumor of the sweattumor of the sweat gland.gland.
  24. 24. Recall, the dermis isRecall, the dermis is attached to theattached to the underlying structuresunderlying structures of the skin byof the skin by subcutaneous tissue.subcutaneous tissue. The subcutaneousThe subcutaneous tissue formstissue forms lip/o/cytes, or fat cells.lip/o/cytes, or fat cells.
  25. 25. A suction lipectomy is theA suction lipectomy is the removal of theremoval of the subcutaneous fat tissuesubcutaneous fat tissue using a blunt-tippedusing a blunt-tipped cannula (tube) introducedcannula (tube) introduced into the fatty area throughinto the fatty area through a small incision. Suctiona small incision. Suction is then applied and fatis then applied and fat tissue is removed.tissue is removed.
  26. 26. Dermat/o/scler/osisDermat/o/scler/osis skin hardening Disease Therefore, dermatosclerosis is literally translated as a disease that results in the hardening of the skin. Also known as scleroderma, this disease is an autoimmune disease that results in scarring of the vital organs resulting in death.
  27. 27. • The oil secreting glands of the skin areThe oil secreting glands of the skin are called the SEBACEOUS GLANDS.called the SEBACEOUS GLANDS. • The sweat glands are known asThe sweat glands are known as SUDORIFEROUS GLANDS.SUDORIFEROUS GLANDS.
  28. 28. MycodermatitisMycodermatitis inflammation skin fungus A mycodermatitis is an inflammatory disease of the skin caused by a fungus. A common example of this is ATHLETE’S FOOT or TINEA PEDIS.
  29. 29. Test YourselfTest Yourself XerophagiaXerophagia TichomycosisTichomycosis AdipoceleAdipocele DermatoplastyDermatoplasty Condition of eating only dry foods A fungal disease of the hair A hernia of fat cells Plastic surgery of the skin
  30. 30. MoreMore CombiningCombining FormsForms ofof ColorColor Cyan/o BlueCyan/o Blue Erythr/o RedErythr/o Red Melan/o BlackMelan/o Black Xanth/o YellowXanth/o Yellow Leuk/o whiteLeuk/o white
  31. 31. The pigment that causes skin coloration isThe pigment that causes skin coloration is MELANINMELANIN Melanosis is the abnormal condition ofMelanosis is the abnormal condition of black.black. A melanoma is a tumor of black pigment.A melanoma is a tumor of black pigment.
  32. 32. A person with bluish discoloration of the skinA person with bluish discoloration of the skin exhibitsexhibits Cyanosis or cyanodermaCyanosis or cyanoderma
  33. 33. • A BASAL CELL CARCINOMA is a type of skinA BASAL CELL CARCINOMA is a type of skin cancer that affects the basal skin layer of thecancer that affects the basal skin layer of the epidermis.epidermis. • A MELANOMA is characterized by asymmetry,A MELANOMA is characterized by asymmetry, irregular borders, and lack of a uniformirregular borders, and lack of a uniform coloration.coloration. • A DECUBITUS ULCER is a bedsore thatA DECUBITUS ULCER is a bedsore that penetrates both epidermis and dermis.penetrates both epidermis and dermis. SOME DISEASE SPECIFICS
  34. 34. PSORIASIS is a chronic disease that isPSORIASIS is a chronic disease that is characterized by red lesions covered by silverycharacterized by red lesions covered by silvery scales.scales. ABRASIONS are scrapesABRASIONS are scrapes ALOPECIA is an absence or loss of hair.ALOPECIA is an absence or loss of hair. CONTUSION is a collection of dried blood beneathCONTUSION is a collection of dried blood beneath the skin. Commonly called bruises.the skin. Commonly called bruises.
  35. 35. CYSTs are closed sacs containing fluid or solidCYSTs are closed sacs containing fluid or solid material.material. ECCHYMOSIS is discoloration of the skin due to aECCHYMOSIS is discoloration of the skin due to a bruise.bruise. ECZEMA is an inflammatory skin disease with red,ECZEMA is an inflammatory skin disease with red, itchy skin. Sometimes has associated blistersitchy skin. Sometimes has associated blisters (bullae)(bullae)
  36. 36. FISSURE is a crack in the skin. Usually associated withFISSURE is a crack in the skin. Usually associated with dry, scaly skin.dry, scaly skin. HIRSUTISM is a condition characterized by excessive hairHIRSUTISM is a condition characterized by excessive hair growth.growth. IMPETIGO is an inflammatory skin disease with isolatedIMPETIGO is an inflammatory skin disease with isolated pustules that rupture.pustules that rupture. LACERATION is a tearing of the skin. Irregular borders.LACERATION is a tearing of the skin. Irregular borders.
  37. 37. MACULEs are flat, discolored lesions.MACULEs are flat, discolored lesions. NODULEs are palpable lesions larger than aNODULEs are palpable lesions larger than a macule. Usually between 1-2 cmmacule. Usually between 1-2 cm PAPULEs are solid elevated lesionsPAPULEs are solid elevated lesions

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