Minggu3 Skin Integumentari
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Transcript of Minggu3 Skin Integumentari
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Skin and the IntegumentarySkin and the IntegumentarySystemSystem
Composed of several tissues
Maintains homeostasisProtective covering
Retards water loss
Regulates body temperature
Houses sensory receptors
Contains immune system cells
Synthesizes chemicals,
including Vitamin
!"cretes small amounts of
waste
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Epidermis, Dermis, & Basement Membrane
Epidermis is subdivided into layers of stratifiedEpidermis is subdivided into layers of stratifiedsquamous epitheliumsquamous epithelium Dermis is made up of connective tissue, epithelial tissue,Dermis is made up of connective tissue, epithelial tissue,
smooth muscle tissue, nervous tissue, and blood.smooth muscle tissue, nervous tissue, and blood. Basement membrane is anchored to the dermis by shortBasement membrane is anchored to the dermis by short
fibrils and separates these two layers of skinfibrils and separates these two layers of skin
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EpidermisEpidermis
lac#s blood vessels
#eratinized
thic#est on palms and soles $%&'()&*mm+
melanocytes provide melaninrests on basement membrane
stratified suamous
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EpidermisEpidermis
-ayers of !pidermis
stratum corneumstratum lucidum
stratum granulosum
stratum spinosum
stratum basale
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Layers of the EpidermisLayers of the Epidermis
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Skin Chanes! "ashesSkin Chanes! "ashes
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Chicken #o$
Shinles
Lyme Disease %mpetio
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&elanocytes and #iment 'ranules&elanocytes and #iment 'ranules
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(ll people have the same number of(ll people have the same number of
melanocytes in their skinmelanocytes in their skin
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(lbinism! Lack of &elanin(lbinism! Lack of &elanin
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#aul Bettany in Columbia #ictures) *he#aul Bettany in Columbia #ictures) *he
Da +inci Code -/Da +inci Code -/
*0E (LB%12 &2134
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DermisDermis
dermal papillae
binds epidermis to underlying
tissuesirregular dense connective tissue
on average )&%(.&%mm thic#
muscle cells
nerve cell processes
blood vessels
hair follicles
glands
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Subcutaneous LayerSubcutaneous Layer
hypodermis
loose connective tissue
adipose tissue
insulates
ma/or blood vessels
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Hair FoicesHair Foices
epidermal cells
tube(li#e depression
e"tends into dermis
hair root
hair shaft
hair papilla
dead epidermal cellsmelanin
arrector pili muscle
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'rey5s (natomy'rey5s (natomy
E6(LES
27 0(%"
C2L2"
+("%(*%21
!ed Heads
ha"e iron
pigment
#trichosiderin$
E"eryone
e%cept abinos
ha"e "arious
amounts of
meanin in
their hair
'ith age, a
oss ofmeanin in hair
can ead to
grayness
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(ais(ais
protective coverings
nail plate
nail bed
lunula
0(1
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Sebaceous )andsSebaceous )ands
usually associated with hair
follicles
holocrine glands 2
disintegrating cell and its
contents for the secretion
secrete sebum
absent on palms and soles
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S*eat or Sudoriferous )andsS*eat or Sudoriferous )ands
widespread in s#in
deeper dermis or hypodermis
eccrine glands 2 types of
merocrine gland that secrete fluid$sweat+ product released through
the cell membrane
aprocrine sweat, ceruminous$wa"+, 3 mammary $mil#+
glands 2 types of aporocrine
glands that secrete cellular
product and portion of the free
ends of cells
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!eguation of Body!eguation of Body
+emperature+emperature
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*he *an &an at *he ?niversity of 3ansas*he *an &an at *he ?niversity of 3ansas
http!@@www-.lAworld.com@news@-=@may@9@hesstill
tanafteralltheseyears@4citylocal
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Heaing of -utsHeaing of -uts
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Heaing of BurnsHeaing of Burns
5irst degreeburn 2 superficial partial(thic#ness
$epidermis damaged+
Second degreeburn 2 deep partial(thic#ness $epidermis
3 dermis damaged+
8hird degreeburn 2 full(thic#ness $epidermis, dermis,
3 accessory s#in structures+autograft $self(transplant+
homograft $temporary transplant from donor+
various s#in substitutes
e"tensive scars
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!ue of (ines!ue of (ines
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Life Span -hangesLife Span -hanges
Scaly s#in
9ge spots
ermis becomes reduced
-oss of fat
:rin#les
Sagging
Sebaceous glands secrete
less oil
Melanin production slows
Hair thins
;umber of hair follicles
decrease
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Life Span Chanes SkinLife Span Chanes Skin
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-inica .ppication-inica .ppication
9cne Vulgarismost common s#in disorder
sebum and epithelial cells clog glands
produces whiteheads and blac#heads $comedones+
anaerobic bacteria trigger inflammation $pimple+largely hormonally induced
androgens stimulate sebum production
treatments include antibiotics, topical creams, birth control pills
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Common Skin DisordersCommon Skin Disorders
(thlete5s foot > tinea pedis or rinworm funal infection of the foot.(thlete5s foot > tinea pedis or rinworm funal infection of the foot. Birthmark > conenital blemish or spot on the skin.Birthmark > conenital blemish or spot on the skin. Boil > bacterial infection of the skin produced when bacteria enter a hairBoil > bacterial infection of the skin produced when bacteria enter a hair
follicle.follicle. Carbucnle > bacterial infection, similar to a boil, that spreads into theCarbucnle > bacterial infection, similar to a boil, that spreads into the
subcutaneous tissues.subcutaneous tissues.
Cyst > fluidfilled capsule.Cyst > fluidfilled capsule. Ecema > noncontaious skin rash.Ecema > noncontaious skin rash. Erythema > reddenin of the skin due to dilation of dermal blood vessels inErythema > reddenin of the skin due to dilation of dermal blood vessels in
response to inAury or inflammation.response to inAury or inflammation. 0erpes> characterie by a recurrin formations of small clusters of vesicles0erpes> characterie by a recurrin formations of small clusters of vesicles
usually caused by herpes simple$ virus contaious.usually caused by herpes simple$ virus contaious. 3eloid > elevated enlarin fibrous scar usually initiated by an inAury.3eloid > elevated enlarin fibrous scar usually initiated by an inAury. &ole > fleshy skin tumor that is usually pimented.&ole > fleshy skin tumor that is usually pimented. #ediculosis > disease produced by an infestation of lice.#ediculosis > disease produced by an infestation of lice. #ruritus > itchin of the skin.#ruritus > itchin of the skin. #usule > elevated, pusfilled area.#usule > elevated, pusfilled area.
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6eroderma #imentosum6eroderma #imentosum
E$treme frecklin and skinE$treme frecklin and skin
cancer due to lack of D1(cancer due to lack of D1(
repair enymes.repair enymes.
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*ypes of Skin Cancer*ypes of Skin Cancer
Squamous cellcarcinoma >
derived from
epithelial tissue
Basal cellcarcinoma >
derived from
epithelial tissue
&alinantmelanoma >
derived from
melanocytes