组织胚胎学 .ppt

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1、 组织胚胎学课件组织胚胎学课件 七年制英文医学班专用七年制英文医学班专用中国医科大学中国医科大学基础医学院基础医学院组胚组胚英文教学组英文教学组Chapter 5 Blood and Hemopoiesis 1.Components:-formed elements:45%red blood cell-erythrocyte white blood cell-leukocyte platelets-plasma:55%,PH 7.3-7.4,90%water contain:plasma protein(albumin,globulin,fibrinogen),lipidprotein,enz

2、ymes,hormone,vitamin,inorganic salt and products of metabolism*serum:is plasma in which the fibrinogen has been removed by clottingBlood smear:Wright or Giemsa stain methods1.Cells1)erythrocyte,red blood cell -normal number:(4.2-5.5)X1012/L in male (3.5-5.0)X1012/L in female -structure:biconcave dis

3、cs in shape,7.5-8.5 um in diameter,1-2um thickno nucleus and organellafilled with hemoglobin,Hb:about 1/3 -normal number:120-150g/L in male 105-135g/L in female -combine and transfer O2 and CO2erythrocyte membrane skeleton:-change shape -main component is spectrin and actinblood type antigen:A,B:-me

4、mbrane protein -ABO blood type -hemolysiserythrocyte ghost*anemia:RBC3.0X1012/LorHb100g/L*reticulocyte:0.5-1%of total erythrocyte population or 3-6%in naonateimmature cellremained ribosome-delicate network structure when stained with brilliant cresyl bluewill disappear after 1-3 days-life span:120 d

5、ays2)leukocyte-a group of large cells with nucleus-involve in defense and immune reaction-normal number:(4.0-10)X109/L-classification:granulocytes:/neutrophil /eosinophil /basophil agranulocytes:/lympocyte /monocyte neutrophil:-normal percentage:50-70%of total leukocyte population-structure:LM:round

6、,10-12um in diameterrob-liked or poly morphous nucleus,2-5 lobesfine neutrophilic granules-pink cytoplasmEM:specificgranule:80%small,0.3-0.4 um ovoid or irregular in shape contain:lysozyme,phagocytin(defensin)azurophilicgranule:20%large,round or ovoid,0.6-0.7 um electron dense lysosome:acid phosphat

7、ase,peroxidase,acidic hydrolase-function:phagocytose bacterium:specific g.-kill Bazurophilic g.-digest B-life span:in blood 6-8 hours,in CT 2-3 dayseosinophil:-normal percentage:0.5-3%of total leukocyte population-structure:LM:round,10-15 um in diameter2 lobes nucleusrough bright red granules-acidop

8、hilic granulesEM:granules:round or ovoid with cube-liked electron dense crystal contain:-ACPase-histaminase-peroxidase-function:counteract the infection of parasitereduce allergic reaction-life span:in blood 6-8 hour,in CT 8-12 daysbasophil:-normal percentage:0-1%of total leukocyte population-struct

9、ure:LM:less,round 10-12 um lobe,“S”shaped or irregular nucleusbasophilic g.:contains heparin,histamine and acidophil chemotactic factorcytoplasm:contain leukotriene-function:involve in allergic reaction-life span:10-15 daysmonocyte:-normal percentage:3-8%of total leukocyte population-structure:LM:la

10、rge round,14-20um nucleus appear as kidney,horse-shoe or ovoid in shapecytoplasm:gray-blue in color,contain azurophilic g.EM:azurophilic granule:lysosome-contain peroxidase,ACPase,non-spacial esterase and lysozyme-function:actively mobile and chemotaxis-life span:in blood 1-5 days,in CT which become

11、 into macrophage-mononuclear phagocytic system,MPS lymphocyte:-normal percentage:20-30%of total leukocyte population-structure:LM:round,small LC 6-8 um,medium-sized LC 9-12 um,large LC 13-20 um in diameterround nucleus with indentation,chromatin appears as spot-liked and electron-dense cytoplasm:/ba

12、sophilic:bright blue in color /less /azurophilic granuleEM:/free ribosome /mito./RER-classification:TC:thymus dependent lymphocyte,75%,involve in cellular immune reaction and regulate immune responseBC:bone marrow dependent lymphocyte,10-15%,become into plasma cell,involve in humoral immune response

13、large granular cell:KC(killer cell)and NKC(nature killer cell),10%-function:involve in immune response3)blood platelet:cytoplasmic fragment of megakaryocyte in bone marrow-normal number:100-300X109/L-structure:LM:disc-liked,2-4um irregular in shapeStimulationin groupsGranulomerehyalomere EM:/cellcoa

14、t:glycosaminoglycan and glycoprotein/tubularsystems:opening tubule system-increasing the exchange area,facilitate the intaking and releasing dense tubule system-SER,collecting Ca2+and synthesizing prostaglandin/granules:specific granule:mediate electron density,with dense core,contains clotting fact

15、or,fibrinogen,acidic hydrolase dense granule:electron dense,contains serotonin(5-hydroxytryptamine),ADP,ATP,Ca2+and adrenalin-function:involve in clotting and stopping the bleed:-aggregation -release components of granule,make thrombinogen become into thrombin,then later make fibrinogen become into

16、fibrin protecting endothelium and take part in repairing of endothelium3.Bonemarrowandhemopoiesis1)Places for hemopoiesis and structure of bone marrowPlacesforhemopoiesis:yalk sac(3W)liver(6W)spleen(4M)bone marrow Structure of bone marrow:red bone marrow -hemopoietic tissue:reticular T.hemopoietic c

17、ell,macrophage,fibroblast,lipid-laden cell and mesenchymal cell -sinusoid:cap.*hemopoieticinductivemicroenvironment(HIM):The environment for hemopoietic cell growth and development,bone marrow HIM includes N of bone marrow,BV,fiber,extracellular GS and hemopoietic stromal cells*stromalcells:-includi

18、ng reticular cell,fibroblast,macrophage,endothelial cell and lipid-laden cell-function:supporting secrete cellular factors,regulate the proliferation and differentiating of hemopoietic cells2)Hemopoieticstemcellandhemopoieticprogenitorcellhemopoieticstemcell(HSC):multipotential stem cell-originated

19、yalk sac red bone marrow constitutes about 0.5%of total bone marrow cells-similar to small LC-feature:strong potential to proliferation,but generally in Go still statemultidifferentiated abilityability to copy itself:keep certain numberhemopoietic progenitor cell(HPC):committed stem cell-originated

20、from hemopoietic stem cell-forming colony forming unit(CFU)under the regulate of colony stimutating factor(CSF):CFU-GEMMBFU-E,CFU-ECFU-GMCFU-MKCFU-TL,CFU-BL3)General regulation of hemopoietic processes:-main steps:promordial stageimmature stagemature stage-regulations:size of cell become smaller and smaller Nucleus become smaller and smaller or disappears chromatin:from fine and loose to rough and dense cytoplasm:-more and more -basophilic:weaker and weaker -specific granule:more and more ability to division:from have to no,but keep the potentials