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ሰላም ምንድን ነው?
ታጣቂ ታዳጊ ነው?
Collagen type III ባጭ ነው?
Elastic fibers ምን ናቸው?
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Collagen fibers በመጠቀም የበጎ ባሽ ናቸው?
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Collagen turnover ተጓጓ?
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በዚህ መጠቀም ላይ የሚፈቀድ ንግግር የሚመስል?
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BW መንደሩ በአንድ መንግስ ውስጥ የተመሳሳይ ቦ ነው?
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BW ከ ዜጎ መ-30 ተ/ ከ 5-30. መ-30. ಇದು ಇದು ಏನು ಅರ್ಥ?
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BW ಯೆಲೆ?
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BW : cellen en de bloedbaan?
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BW types: samenstelling en respectieve hoeveelheid?
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ከዚህ እንዴት እንደሚታወስ እንደጥራት አይደለም?
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Elastic fibers, መሰራታቸው ምን ነው?
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Elastin molecules, እ/ነ መ/ (covalent bonds) መ/ (cross-linked network) ማ/ ነ/?
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Proteoglycans, በ/ (highly hydrated, hydrophilic polyanionic nature) መ/ መ/ (binding cations) መ/ (maintaining tissue hydration) ነ/?
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ECM of connective tissue, ከ/ (electron microscopy) መ/ ም/?
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Collagen fibers, ም/ መ/ የ/ መ/ መ/?
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እንዴት የተለመደ እናሜራለሁ?
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ፓስሌም አባ እንዴት እንደ አገ መነሻ እን?
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እንዴት ምንድን ነው የተለመደ?
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ምን መነሻ እና መሳጫ እንዲያመ?
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MC- የ -MC- MC- MC -MC -MC -MC- MC -MC -MC- MC-
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Fibrocyt- MC-
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Mestcellen- MC -
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lysosomen (Fibroblast)- MC -
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Study Notes
(1) Fibroblasten:
- Produceren van extracellulaire matrix componenten: collageen, elastine, glycosaminoglycanen, multiadhesive glycoproteïnen
- Fibroblast = actieve cel: grote, ovale nucleus, prominente nucleolus, veel RER, goed ontwikkelde Golgi complex
- Fibrocyt: minder actief: kleiner met minder ontwikkelde celcomponenten
- Figure 5–2: Rat skin met fibroblasten (F) in dermis
- Figure 5–3: Quiescent fibroblasts met smalle cytoplasmaprojesies en condenseerde chromatine
- Figure 5–4: Actieve en quiescent fibroblasts: verschillen in externe kenmerken en ultrastructure
- Figure 5–5: Elektronmicrografie van meerdere vlakkige fibroblasten in dichte bindweefsel
(2) Macrofagen:
- Irregulier oppervlak met uitstulpingen: endocytose activiteit
- Goed ontwikkeld GC, veel lysosomen, prominent RER
- Afgeleid van monocyten
- Veranderen van monocyt naar macrofaag: toename van GC, # lysosomen, # microtubulen, # microfilamenten
- Figure 5–6: Rat pancreas met 3 macrofagen (pijlen) die trypan blue hebben opgenomen in granula
- Figure 5–7: Elektronmicrografie van macrofaag met secundaire lysosomen, nucleus, en nucleolus
- Figure 5–8: Elektronmicrografie van macrofagen en 2 eosinofiele cellen bij een tumor
(3) Mestcellen:
- Gepakt met secreet granula: veel granula bevatten
- Centrale, ronde nucleus
- Granula bevatten mediators (bv. Histamine) en proteasen, chemotactische factoren, neutrofil chemotactische factoren
- Functie: opslaan en stockeren van chemische mediators van ontstekingsreactie
- Secrete mestcellen leukotriënen: paracrine secretie
- Figure 5–10: Rat tong met mastcellen (MC) in bindweefsel rond spiercellen en bloedvaten
- Figure 5–11: Elektronmicrografie van menselijke mastcel met granula (G) die heparine en histamine bevatten
- Figure 5–12: Mastcelsecretie: stappen van IgE-bindings, antigen-bindings, adenylate cyclase-activatie, Ca2+-toestroming, intracellulaire fusie van specifieke granula en exocytosis van hun inhoud.
(Note: The Amharic translation is not provided as I don't have the capability to translate the text to Amharic and there isn't a clear consensus on Amharic character encoding for technical terminology.)
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Description
Learn about the characteristics and functions of fibroblasts, macrophages, and mast cells in tissues. Explore their structures, roles, and distinguishing features through electron micrographs and descriptions.
