CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.
-
Upload
natasha-baisley -
Category
Documents
-
view
222 -
download
0
Transcript of CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.
![Page 1: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/1.jpg)
INTEGUMENTARY SYSTEMCHAPTER 6
![Page 2: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/2.jpg)
INTEGUMENTARY SYSTEMSKIN
Largest organ by weightACCESSORY STRUCTURES
![Page 3: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/3.jpg)
SKINFUNCTIONS:
MAINTAIN HOMEOSTASISPROTECTIVE COVERINGPREVENT WATER LOSSREGULATE BODY TEMPERATURESENSE RECEPTORSSYNTHESIZES CHEMICALSIMMUNE SYSTEM CELLSEXCRETES SOME WASTE
![Page 4: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/4.jpg)
CUTANEOUS MEMBRANEEPIDERMIS
STRATIFIED SQUAMOUS EPITHELIUMDERMIS
THICKERCONNECTIVE TISSUE: DENSE IRREGULAR;
AREOLAR; SMOOTH MUSCLE; NERVOUS TISSUE; BLOOD
BASEMENT MEMBRANE: SEPARATES BOTH
![Page 5: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/5.jpg)
SUBCUTANEOUS LAYERHYPODERMISAREOLAR AND ADIPOSE TISSUEBINDS TO UNDERLYING ORGANSFIBERS CONTIGUOUS WITH DERMISINSULATION:
CONSERVE HEAT?MAJOR BLOOD VESSELS
RETE CUTANEUM
![Page 6: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/6.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 7: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/7.jpg)
EPIDERMISSTRATIFIED SQUAMOUS
NO BLOOD VESSELSLAYERS:
STRATUM BASALE (STRATUM GERMINATIVUM/ BASAL CELL LAYER)
STRATUM SPINOSUMSTRATUM GRANULOSUMSTRATUM LUCIDUMSTRATUM CORNEUM
![Page 8: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/8.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 9: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/9.jpg)
STRATUM BASALELIVING: DIFFUSIONMITOSISNUCLEISINGLE ROW OF CUBOIDALMELANOCYTES
![Page 10: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/10.jpg)
STRATUM SPINOSUMMANY LAYERSLARGE, CENTRAL, OVAL NUCLEIKERATIN FIBERS FORMINGCELLS STARTING TO FLATTEN
![Page 11: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/11.jpg)
STRATUM GRANUSLOSUM3-5 LAYERSFLATTENED GRANULAR CELLSKERATINSHRUNKEN NUCLEI
![Page 12: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/12.jpg)
STRATUM LUCIDUMIN THICKEST SPOTS: PALMS, SOLESCLEAR CELLS: NUCLEI, ORGANELLES
CAN’T BE SEEN
![Page 13: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/13.jpg)
STRATUM CORNEUMDEADKERATINIZEDDESMOSOMESNONNUCLEATEDSQUAMOUS
![Page 14: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/14.jpg)
EPIDERMAL HOMEOSTASISRUBBED OFF CELLS = MITOSISINCREASES IN AREAS OF HEAVIER WEARCALLUSSES, CORNS
![Page 15: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/15.jpg)
EPIDERMAL FUNCTIONSPROTECTION:
PREVENTS WATER LOSSAGAINST MECHANICAL FORCEAGAINST HARMFUL CHEMICALSPREVENTS ENTRANCE OF PATHOGENS
![Page 16: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/16.jpg)
MELANOCYTESMELANOSOMES PRODUCE MELANIN
FROM TYROSINESKIN COLORABSORBS UV RADIATIONIN STRATUM BASALE BUT CELLULAR
EXTENSIONS (PROCESSES) ALLOW MELANIN TO PASS TO KERATINOCYTES
KERATINOCYTES SEEM TO STIMULATE MELANOCYTES TO RELEASE MELANIN
![Page 17: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/17.jpg)
SKIN COLORGENETICS & ENVIRONMENTSAME NUMBER OF MELANOCYTES BUT DIFFER IN
HOW MUCH MELANIN IS PRODUCEDDARK SKIN: MORE MELANIN; SINGLE, LARGE
PIGMENT GRANULESLIGHTER SKIN: SMALLER AND 2-4 GRANULESALBINISM: NO PIGMENTSUNLIGHT, UV AND X-RAYS INCREASE PRODUCTION
OF MELANIN: FADESOXYGENATED BLOOD IN SKIN: LOTS OF BLOOD=
PINKCYANOSIS: LOW O2: DARK RED HEMOGLOBIN
![Page 18: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/18.jpg)
DERMISDERMAL PAPILAE- ?FINGERPRINTSBINDS EPIDERMISDENSE IRREGULAR CONNECTIVE TISSUE1-2 MM (.5MM-3.0MM)SMOOTH MUSCLE; SKELETAL MUSCLENERVE CELL PROCESSES: SENSORY AND
MOTORSENSE RECEPTORS (CHAP 12)
![Page 19: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/19.jpg)
ACCESSORY STRUCTURESNAILS
NAIL PLATE, NAIL BED- SPECIALIZED EPITHELIAL CELLS
LUNULA- MITOSIS-TINY KERATINIZED SCALES
![Page 20: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/20.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 21: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/21.jpg)
HAIR FOLLICLESGROWTH CYCLE: 2-6 YEARS, REST, FALLS
OUT, REPLACEDON MOST SURFACES BUT NOT ALL AS
DEFINEDHAIR FOLLICLE: EPIDERMAL CELLS AT
BASE, HAIR ROOT: NOURISHED BY DERMAL BLOOD VESSELS
MOVE UP, KERATINIZE, DIE = HAIR SHAFTBALDNESS: GENETIC
DOMINANT/RECESSIVE
![Page 22: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/22.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 23: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/23.jpg)
HAIR COLORGENES DETERMINE PIGMENT TYPE AND
AMOUNTMELANOCYTES:
EUMELANIN: DARK HAIRPHEOMELANIN BLONDE, REDTRICHOSIDERIN: REDNO PIGMENT: WHITEMIX OF WHITE AND PIGMENTED: GRAY:
SOME INTERMEDIATE COLOR = GRAY
![Page 24: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/24.jpg)
ARRECTOR PILI MUSCLEON EACH HAIR FOLICLE: GOOSE BUMPSSMOOTH MUSCLEINVOLUNTARY
![Page 25: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/25.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 26: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/26.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 27: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/27.jpg)
SEBACEOUS GLANDSSPECIALIZED GLANDULAR EPITHELIAL CELLS
ASSOCIATED WITH HAIR FOLLICLES: PILOSEBACEOUS UNIT
BRANCHED ACINAR GLANDHOLOCRINE: FATTY MATERIAL: SEBUM: BURSTS CELL:
LIPID, WAX, CELL DEBRIESINTO HAIR FOILLICLE; SOME TO SWEAT PORES (AREAS
WITHOUT HAIR)KEEPS HAIR AND SKIN SOFT, PLIABLE AND WATERPROOFSCATTERED; NOT ON PALMS, SOLES; NOT ALL WITH
FOLLICLESSPECIALIZED: MEIBOMIAN GLANDS: SECRETION SLOWS
EVAPORATION OF TEARS
![Page 28: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/28.jpg)
SWEAT GLANDSSUDORIFEROUS GLANDSWIDESPREADBALL IN DERMIS OR SUBCUTANEOUSSPECIALIZED GLANDULAR EPITHELIAL CELLSMOST NUMEROUS/ FOUND IN MOST AREAS: ECCRINE:
RESPOND TO INCREASED BODY TEMPSARE MEROCRINE: ODORLESS; MOSTLY H2O AND SALT, A
LITTLE UREACONTROLLED BY SYMPATHETIC NERVOUS SYSTEMAPOCRINE GLANDS: ARE ACTUALLY MEROCRINEMORE VISCOUS FLUID; DEVELOP SCENT FROM SKIN
BACTERIA; ACTIVATED AT PUBERTY IN ARMPITS, AREOLA, GENITALANAL AREA; HAIR FOLLICLESSTIMULATED BY ADRENALINE
![Page 29: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/29.jpg)
MODIFIED SWEAT.T GLANDS: CERUMINOUS GLANDS AND MAMMARY GLANDS
![Page 30: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/30.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 31: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/31.jpg)
REGULATION OF BODY TEMPERATUREHOMEOSTASIS: HEAT PRODUCED= HEAT
LOSTHEAT PRODUCTION:
CELLULAR RESPIRATIONSET POINT IN:
HYPOTHALAMUS:VASODILATION/VASOCONSTRICTIONHEART
![Page 32: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/32.jpg)
HEAT LOSSRADIATION:
MAJOR PROCESS; INFRARED
CONDUCTION: TO COOLER OBJECT IN CONTACT (CHAIR/AIR)
CONVECTION: WARMER AIR MOVES AWAY AND COOLER AIR IS
THEN HEATEDEVAPORATION:
ECCRINE SWEAT GLANDS RELEASE SWEATEVAPORATES AND CARRIES HEAT AWAY
![Page 33: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/33.jpg)
HEAT RETENTIONVASOCONSTRICTION:
STOPS RADIATION, CONDUCTION, CONVECTION,
SWEAT GLANDS INACTIVESTOPS EVAPORATION
CONTRACTION OF MUSCLES WHICH COULD LEAD TO SHIVERING
![Page 34: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/34.jpg)
HEAT REGULATION PROBLEMSHOT, HUMID DAY:
NO EVAPORATIONHYPERTHERMIAIF HOTTER THAN BODY TEMP MAY GAIN HEAT FROM
ENVIRONMENTPROLONGED COLD EXPOSURE/SICKNESS:
HYPOTHERMIASHIVERINGMENTAL CONFUSION, LETHARGY, LOSS OF REFLEXES,
LOSS OF CONSCIOUSNESS, MAJOR ORGANS SHUT DOWN, DEATH
BODIES CORE CAN ONLY DROP A FEW DEGREES, EXTREMETIES CAN SURVIVE DROPS TO 20-30° F
RISK: HOMELESS, AGED, YOUNG, VERY THIN
![Page 35: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/35.jpg)
HEALINGINFLAMMATION:
BLOOD VESSELS DILATE AND INCREASE PERMEABILITY: EDEMA
BECOME: RED, SWOLLEN, HOT, PAINFUL ?BENEFIT:
PROVIDE MORE O2 AND NUTRIENTS
![Page 36: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/36.jpg)
HEALING CUTSSHALLOW:
EPITHELIAL CELLS INCREASE MITOSISDEEP:
BLOOD VESSEL CUT: CLOTTING FIBRIN FORMED FROM ANOTHER BLOOD PROTEIN WHICH TRAPS
PLATELETS DRIES: SCAB EPITHELIAL CELLS REPLICATE FIBROBLASTS MOVE IN AND SECRETE COLLANGENOUS FIBERS CONNECTIVE TISSUE MATRIX RELEASES GROWTH FACTORS
INCREASE MITOSIS BLOOD VESSELS EXTEND IN PHAGOCYTES REMOVE DEAD CELLS AND DEBRIS SCAB SLOUGHS OFF SCAR COULD FORM
![Page 37: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/37.jpg)
SCARTOO WIDEGRANULATIONS FORM:
NEW BLOOD VESSEL AND FIBROBLASTSSECRETE COLLAGENOUS FIBERSBLOOD VESSELS ARE RESORBED,
FIBROBLASTS MOVESCAR IS MOSTLY COLLAGENOUS FIBERS
![Page 38: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/38.jpg)
BURNS1ST DEGREE:
PARTIAL THICKNESS: ONLY EPIDERMIS; REDNESS, MILD EDEMA,MAY SHED;
MILD SUNBURNHEALS QUICKLY, NO SCARRING
2ND DEGREE: DEEP PARTIAL THICKNESS: EPIDERMIS AND SOME
DERMIS;FLIUID LEAKS FROM CAPILLARIES: BLISTERS; DARK RED TO WAXY WHITE;
HOT OBJECTS OR LIQUIDS, FLAMES, BURNING CLOTHES; HEALING DEPENDS ON EPIDERMAL STEM CELLS IN ACCESSORY STRUCTURES OF DERMIS ?;
NO SCARRING UNLESS INFECTED
![Page 39: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/39.jpg)
BURNS3RD DEGREE: FULL THICKNESS:
DESTROYS EPIDERMIS, DERMIS AND ACCESSORY STRUCTURES; LEATHERY, RED TO WHITE OR BLACK;
IMMERSION IN HOT LIQUIDS, PROLONGED EXPOSURE TO HOT OBJECTS, FLAMES OR CORROSIVE CHEMICALS;
SCARRING; GRAFTING MAY BE NEEDED: WHY? AUTOGRAFT ALLOGRAFT (MUST BE REPLACED) SKIN SUBSTITUTES AMNIOTIC MEMBRANE,
ARTIFICIAL MEMBRANES, CULTURED EPITHELIAL CELLS,
![Page 40: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/40.jpg)
http://classes.midlandstech.edu/carterp/Courses/bio210/chap05/lecture1.htm
![Page 41: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/41.jpg)
LIFE SPAN CHANGESEPIDERMIS:
MITOSIS SLOWS: LARGER, IRREGULAR BUT LESS; SCALY: KERRATIN BONDS; ‘AGE SPOTS’ FROM OXIDATION OF GLANDS;
DERMIS: FIBER PRODUCTION SLOWS: THINS; WITH LOSS OF
ADIPOSE (SUBCUTANEOUS): WRINKLING; HEALING SLOWWS (LESS FIBROBLASTS); OIL PRODUCTION DECREASES: SKIN DRIES;
ACCESSORY GLANDS: LESS MELANIN: WHITE HAIR; HAIR GROWTH SLOWS,
HAIRS THIN, FOLLICLE NUMBER DECREASES, BALDNESS (MALES); LESS BLOOD TO NAILS: SLOWS GROWTH, HARDEN; LESS PAIN AND PRESSURE RECEPTORS;
![Page 42: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/42.jpg)
LIFE SPAN CHANGES (CONT.)TEMPERATURE CONTROL LESSENS: LESS
SWEAT GLANDS AND LESS CAPILLARIES TO GLANDS; SHIVERING ABILITY LESSENS; LESS DEEPER BLOOD VESSELS AND LESS ABILITY TO SHUNT BLOOD TO INTERIOR: FEEL COLD; PALE: LESS BLOOD VESSELS IN SKIN; BED SORES: CHANGES IN BLOOD VESSELS;
GET LESS VITAMIN D AND GET OUTSIDE LESS: AFFECTS BONE MAY NEED SUPPLEMENTAL VITAMIN D;
![Page 43: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/43.jpg)
THINGS TO KNOWWhat is the integumentary system? The
parts, membrane type, functions .Layers, what is found there, functionsLayers of epidermis: what is present,
purpose, melanocytes,What determines skin colorAccessory structures: nails, hair, oil glands,
sweat glandsHow body temperature is regulated, heat is
lost, retained, problems with regulation
![Page 44: CHAPTER 6. INTEGUMENTARY SYSTEM SKIN Largest organ by weight ACCESSORY STRUCTURES.](https://reader035.fdocuments.us/reader035/viewer/2022062308/56649c7f5503460f949364d9/html5/thumbnails/44.jpg)
How healing occurs in the different layers, scar formation
Characteristics of different types of burns, healing, grafting
Life span changes: epidermis, dermis, accessory glands, temperature control