7. kuliah kategori dasar jaringan print
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Cell and Genetics – Histology
Jeanne A PawitanRulliana Agustin
Cells Stem cells
Cells of the 4 basic tissues Other specialized cells
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Stem cells – ability todierentiate
Totipotent > all
placenta
!luripotent > all
"ultipotent > se#era
$nipotent > % type
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Stem cells & source
Jeanne A PawitanRulliana Agustin
'mbryonic stem cells (inner cell mass)
*dult stem cells+ bone marro,- umbilical
cord blood- .harton /elly- adipose tissue-etc0 "ultipotential > connecti#e tissue- blood- etc
$nipotential > progenitors (committed) % cellline 1 dierentiation 1 mature fullydierentiated cells
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Cells of the 4 basic tissues
Jeanne A PawitanRulliana Agustin
'pithelium+ cells- intercellular
substance2e3tracellular matri3 – basementmembrane
Connecti#e tissue+ intercellular substance
"uscle+ muscle cells 5 muscle 6bers
7er#e+ 7eurons
7euroglial cells (support- protect neurons)
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'pithelium (and glands)
8ayers Single
Simple
(!seudostrati6ed)
"ultipleStrati6ed
(Transitional)
Shape S9uamous
Cuboidal
Columnar
(tora3)8ocation
Jeanne A PawitanRulliana Agustin
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Jeanne A PawitanRulliana Agustin
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'pithelial cells
Mucous membrane:
oral, esophagus,
vagina
Stratified squamous – eratin !
"pidermis!sinStratified squamous – eratin #
$rinar% S&'ransitional
Respirator% S&Pseudostratified
(landsSimple cuboidal, columnar
Stratified cuboidal, columnar
"ndothelium,
mesothelium
Simple squamous
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!olarity and cell surfacespecializations
Jeanne A PawitanRulliana Agustin
"orphological domain
:iochemical domain
!olarity ;unctional domain
*pical domain – free surface – lumen
:asolateral domain:asal & basal lamina
8ateral – other cells
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*pical domain &lumen
"icro#illi >plasmamembrane cytoplasm
Cilia <inocilia Stereocilia
=on channels *9uaporins Carrier proteins H& *T!ase
Glycoproteins Jeanne A PawitanRulliana Agustin
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:asolateral domain
Jeanne A PawitanRulliana Agustin
=ntercellular interdigitation- basal enfoldings unctional specialization
?eceptors
Hormones 7eurotransmitters
7a&< *T!ase
=on channels Sites for constituti#e secretions
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unctionalspecialization
8ateral membranespecialization –
/unctional comple3es Occluding /unction2tight
/unction (@taut seAap@) >zonula occludens
*dhering /unction (@tautleAat@) Bonula adherens &zonulae
adherentes
;ascia adherens
"acula adherens(desmosome) &hemidesmosome Jeanne A Pawitan
Rulliana Agustin
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Connecti#e tissues
Jeanne A PawitanRulliana Agustin
"esenchyme (embryo) – mucosa2gelatinosa
Connecti#e tissue proper
8oose (areolar) connecti#e tissue areolarCT ?eticular connecti#e tissue *dipose tissue ense connecti#e tissue
ense regular connecti#e tissue ense regular collagenous connecti#e tissue ense regular elastic connecti#e tissue
ense irregular connecti#e tissue
Specialized connecti#e tissue (cartilage- bone-blood)
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=ntercellular substance2e3tracellular matri3
Jeanne A PawitanRulliana Agustin
Ground2amorphous substance (gel liAe)–tissue Duid Glycosaminoglycans (G*G) (hyaluronic acid-
heparin- sulfated G*G) !roteoglycans ( certain G*G – !rotein) *dhesi#e glycoproteins (6bronectin- laminin-
entactin- tenascin- chondronectin- osteonectin)
;ibers Collagen type = – E== ?eticular (type === collagen)
'lastic 6bers
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Cells ofconnecti#e
tissue Cells ofmesenchyme "esenchymal cells
Cells of looseconnecti#e tissue
Cells of reticularCT ?eticular cells
8ymphocytes
!lasma cells
Cells of cartilage Jeanne A PawitanRulliana Agustin
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8oose connecti#etissue
;i3ed cells ;ibroblasts26brocytes Histiocytes2macroph
ages "ast cells !ericytes *dipose cells
Transient cells+ plasma cells leucocytes macrophages
Jeanne A PawitanRulliana Agustin
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Cells ofcartilage
Chondrogenic
cells Chondroblast
Chondrocyte ShrunAen
lacuna
Jeanne A PawitanRulliana Agustin
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Cells ofbone
Osteogenic
cells Osteoblast
Osteocyte
Osteoclast
Jeanne A PawitanRulliana Agustin
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Jeanne A PawitanRulliana Agustin
Cells of the blood :asement membrane
"uscles 7er#ous tissue (neuron) Specialized cells
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Cells of blood
'rythrocyte 8eucocyte
7eutrophil'osinophil:asophil"onocyte
lymphocyte
Jeanne A PawitanRulliana Agustin
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:asement membrane
:asal lamina 8amina lucida 8amina densa Type =E collagen-
glycoprotein-proteoglycan
8amina reticularis+type =- === collagen
Structural and6ltering functions-cell polarity-regulate cell prolif0and di0- etcJeanne A PawitanRulliana Agustin
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"uscles
Jeanne A PawitanRulliana Agustin
Smooth muscle Striated muscle – characteristic striation
– striated myo6brils sAeletal muscle cardiac muscle
"yoepithelial cells –glandular unit in
glands "yo6broblast – ,ound contraction- tooth
eruption
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"yo6bril & striated
Jeanne A PawitanRulliana Agustin
"yo6lament (contractile protein+ myosin-actin) & speci6c arrangement parallel arrays regularly repeated interdigitating in myo6bril
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$ni9ue terms in muscle
Jeanne A PawitanRulliana Agustin
Sarcolemma 5 cell membrane Sarcoplasm = cytoplasm
Sarcoplasmic reticulum = smoothsurfaced endoplasmic reticulum(S'?)
Sarcosome 5 mitochondria muscle fber 5 muscle cell
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Smooth muscle
Jeanne A PawitanRulliana Agustin
8ocation+ ,all of hollo, organ & lumen igesti#e system ?eproducti#e system
$rinary system ?espiratory system ucts & large (glands) ermis (sAin)
;unction+ contraction protein synthesis → e3tra cell+ collagen-
elastin- glycosaminoglycans- proteoglycans-
gro,th factors
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Smooth muscle
Jeanne A PawitanRulliana Agustin
contraction & in#oluntary – controlled by *utonomic ner#ous system (sympathetics-
parasympathetics) Hormone+ bradyAinin 8ocal physiological condition
'#ery 6ber – lined by e3ternal lamina(outside sarcolemma)
reticular 6ber & embedded in e3ternal lamina– surrounding each muscle cell – function+control and unify the strength of muscle 6bercontraction
S th
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Smoothmuscle
6ber Shape + fusiform-
elongated –F & Im-length &J0K mm
Surrounded bysarcolemma (cellmembrane)
7ucleus & center – o#al –%&K nucleolei
H'+ cytoplasm –homogenous –acidophilic
=ndi#idual cellJeanne A PawitanRulliana Agustin
= ti th l
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=nner#ation – smooth muscle6ber
Jeanne A PawitanRulliana Agustin
7euromuscular /unction usually en passanttype :ulging of a3on Containing synaptic #esicles
7or epinephrine – sympathetic *cetylcholine – parasympathetic
Type "ulti unit –indi#idual inner#ation (iris- #as deferens)
=ntermediate Eisceral – some 6bers – % neuromuscular /unction –
gap /unction2ne3us (uterus- G= tract) – otherinDuencing factor Humoral factor + o3ytocin "icro en#ironmental factor + stretching (intestines)
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Cardiac muscle
Jeanne A PawitanRulliana Agustin
e#elopment+ "yoepicardial mantle insplanchnic mesenchyme → epicardium myocardium
Cardiac muscle Cardiac muscle 6ber–branching&anastomosing→
net,orA – arranged in layers (laminae) :et,een 6bers – connecti#e tissue Connecti#e tissue bet,een laminae – contains+
:lood #essels → capillaries → net,orA –in connecti#etissue bet,een each 6ber
7er#es conducting system – in heart
C di
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Cardiacmuscle 6ber
Striated- branching 8ength %&LJ Im 7ucleus % (occasionally
K) – center – big –o#al !erinuclear space :et,een cells (at the
end) & intercalated disA &consist of+
Trans#erse portion+facia adherens (≈ BdisA)- desmosome
8ateral portion+ gap
/unctionJeanne A PawitanRulliana Agustin
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Sarcoplasm contains
Jeanne A PawitanRulliana Agustin
"yo6brils F&%&K Im –longitudinal –regularlyarranged → striated (longitudinal section)+ * band – (anisotropic on polarized light → darA) = band– (isotropic on polarized → light)
'lectrone microscope+ Sarcoplasmicreticulum 5 S'? 7et,orA around myo6bril ;unction+ intracellular Ca storage (M sAeletal
muscle) Small terminals (terminal cisternae &) The rest 5 longitudinal sarcotubule branches Contraction needs acti#e transport of Ca from
e3tra cell membrane contains unctional feet (5 #olta e ated Ca
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Sarcoplasm contains
Jeanne A PawitanRulliana Agustin
Organels "itochondria >>> & N #olume – cardiac
muscle "yoglobin → OK transport Glycogen particle → energy source for
contraction ( ,ith lipid)
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Jeanne A PawitanJeanne A PawitanRulliana Agustin
Cardiac muscle 6ber – Ttubule
'"+ Sarcolemma – tubular in#agination –trans#erse – branching & anastomosing → Ttubule (trans#erse tubule)
=ntert,ine among myo6bril 8ocation+ around B line – %2sarcomere
Open to e3tra cellular compartment &lined bye3ternal lamina
F K0 T tubule in sAeletal muscle ;unction+ facilitate conduction – depol0 ,a#e
&along sarcolemma
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"yo6brils
Jeanne A PawitanRulliana Agustin
* band (darA) – H band (light) – " line = band (light) – B line (B disA- darA) Sarcomere 5 myo6bril region bet,een
K B line 5 % contractile unit Contraction+
= band & shortened H band & disappeared
* band & constant B line & approaching each other
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Jeanne A Pawitan
Cardiac muscle 6ber&atrium F M 6ber in #entricle → myoendocrine cells Contains granules & cardiodilatin
(C)2*trial 7atriuretic (!oly)peptide (*7!) –esp0 in right atrium *7! – regulation of Duid –electrolyte balance
'erent arteriole constriction → diuresis- sodiume3cretion
Sodium- ,ater resorption in Aidneys (renal tubules)P → blood pressure P &
Easodilatation
inhibit the release of arginine&#asopressin (posteriorhypophysis)- and aldosterone (adrenal corte3)
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Jeanne A Pawitan
SAeletal muscle
in#estments 'pimysium – muscle – irregular dense
collagenous connecti#e tissue
!erimysium – fascicles (bundles) & M dense
'ndomysium – muscle 6ber (cell) & reticular6ber- basal lamina 2 e3ternal lamina
cell
SAeletal muscle 6bers – striated – parallel Satellite cells
SAeletal
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Jeanne A Pawitan
SAeletalmuscle
cells26bers e#elopment+ myoblast – parallel→ end –end → fused → myotube –formed myo6bril → sAeletalmuscle 6ber
Shape+ long- tubular – F %J&%JJIm
:et,een 6bers+ endomysium continuous capillaries – parallel to6ber
SAeletal muscle 6ber – nonbranching &striated &multinucleated
7uclei – periphery – in a ro, –inside cell membrane(sarcolemma)
'"+ Sarcolemma in#aginate → Ttubule (trans#erse tubule)
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Jeanne A Pawitan
Sarcoplasm+ contains
* lot of myo6bril F&%&K Im –longitudinal – alongthe 6ber – regularly arranged → striation inlongitudinal section+ * band – (anisotropic on polarized light → darA) = band– (isotropic on polarized light → light)
'"+ Sarcoplasmic reticulum 5 smooth surfaceendoplasmic reticulum ;orm a net,orA around myo6bril ;unction+ intracellular Ca storage (esc0 terminal
cysterna) *&= /unction – dilated → terminal cysterna The membrane has /unctional feet (5 #oltage gated Ca release
channels) The rest 5 longitudinal sarcotubules their branches
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Jeanne A Pawitan
T tubule
Tubular in#agination –trans#ersal –branching&anastomosing – intert,ineamong myo6bril
8ocation+ trans#ersal plane & *&= /unction→
K in each sarcomere To e3tra cell & open *ssociated ,ith sarcoplasmic reticulum ;unction+ facilitate conduction of depol
,a#e along sarcolemma T tubule K terminal cysternae → triad function+ spreading of depol ,a#e – fast – from
sarcolemma – trough out the cell – to terminalcysterna
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Jeanne A Pawitan
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Jeanne A Pawitan
"yo6bril
* band (darA) – H band – pale –" line = band (light) –B line- B disA – thin- darA
Sarcomere 5 myo6bril area bet,een K Bline 5 contractile unit of sAeletal muscle6ber
Contraction+ = band shortened
H band disappeared * band remain unaltered
B line – mo#e closer together
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Jeanne A Pawitan
Satellite cells
Satellite cells 5 regenerati#e cells
Small cell – location+ shallo, depression– muscle cellQs surface
'3ternal lamina – shared ,ith musclecell 1 inside e3ternal lamina
7ucleus&one & > dense & > coarse
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Jeanne A Pawitan
"yotendinuous /unction
Connecti#e tissue–muscle – tendon –continuous
Cells tapered – Duted (deeply folded) Collagen 6bers&tendon – penetrate
=nfoldings
'ndomysium – continuous – reticular 6bers
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Jeanne A Pawitan
=nner#ation of sAeletal
muscle "otor ner#e 6bers (R motor neurons –a3on&
myelinated) branching – unmyelinated(Sch,ann cells ) – terminal dilated &myoneural /unction (motor end plate) *3on terminal Synaptic cleft "uscle cell membrane
Sensory ner#e 6bers muscle spindles – among muscle cells –stretch ?3
Golgi tendon organ (neurotendinuous spindle)–inhibitory feedbacA & R motor neurons & rela3
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Jeanne A Pawitan
?egeneration & muscles
SAeletal muscle – regeneration () SAeletal muscle 6ber mitosis Satellite cells
=n/ury+ satellite cells & mitosis – hyperplasia *t muscle building+ satellite cell – muscle 6ber
&fusion → mass increase → hypertrophy
Cardiac muscle & regeneration-6broblast – connecti#e tissue (scar)
Smooth muscle – regeneration ()
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Jeanne A Pawitan
?egeneration – smoothmuscle
=n/ury →formation of ne, 6bers "itosis – smooth muscle 6ber (G= tr0- urin0 tr0)
ierentiation & pericyte – blood #essel $terus –pregnant – smooth muscle
hyperplasia & mitosis
hypertrophy
7eurons 7er#ous
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Jeanne A Pawitan
7eurons 7er#oustissue
Cell body (soma-periAaryon) – nucleus–nucleolus prominant
endrite (multiple) 7issl bodies :ranching
*3on (single) – long &branching *3on HillocA *3on terminals- end
bulbs- terminal boutons1 synapse
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Jeanne A Pawitan
Glial cells
*strocytes ;ibrous
!rotoplasmatic Oligodendroglia
"icroglia
'pendymal cells
Sch,ann cells
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Jeanne A Pawitan
Oligoendroglia
Sch,ann cell
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Jeanne A Pawitan
Specialized
cells
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Jeanne A Pawitan
!rotein secretingcells
'30+ chief cells(stomach)- acinar cells(pancreas)
Shape+ columnar-
truncated pyramid- etc :asal cytoplasm &basophilic 7ucleus ?ich in ?'?- polysome
*pical cytoplasm &acidophilic Secretory granules –
proenzyme (zymogen)
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Jeanne A Pawitan
Steroid secreting cells
'3+ spongiocytes(adrenal corte3)
Shape+ polyhedral Cytoplasm
'3tensi#e net,orAof S'?
8ipid droplets –appear #acuolated
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7euroendocrine cells
*rgentan- argyrophilic –sil#er staining
*!$5 amine precursoruptaAe decarbo3ylation
7'S5 diuseneuroendocrine system
8ocation+epithelium2glands –
systems Secretory granules –at
basal cytoplasm2 nearblood #essel