Qhov Tseem Ceeb - Hematopoiesis vs Erythropoiesis
Ntshav yog cov kua dej tseem ceeb uas nkag mus rau hauv cov hlab ntsha tseem ceeb ntawm txhua tus vertebrates. Ntshav thauj cov pa oxygen thiab cov khoom tsim nyog rau cov hlwb ua haujlwm thiab thauj cov khib nyiab thiab carbon dioxide los ntawm cov hlwb. Nws yog tsim los ntawm cov ntshav plasma thiab cov qe ntshav hu ua cov qe ntshav liab, cov qe ntshav dawb, thiab platelets. Cov qe ntshav uas paub tab muaj lub neej luv luv. Li no cov synthesis ntawm billions ntawm cov ntshav hlwb txhua hnub yuav tsum tau ua kom tau raws li qhov yuav tsum tau ntawm txoj kev. Hematopoiesis yog cov txheej txheem uas tsim cov qe ntshav ntawm cov kab mob hauv lub cev. Hematopoiesis tau muab faib ua tsib chav kawm loj. Erythropoiesis yog ib pawg ntawm lawv. Erythropoiesis yog txheej txheem uas tsim cov qe ntshav liab (ib hom qe ntshav). Yog li, qhov sib txawv tseem ceeb ntawm hematopoiesis thiab erythropoiesis yog tias hematopoiesis yog tag nrho cov txheej txheem ntawm kev tsim cov qe ntshav thaum erythropoiesis yog ib feem ntawm hematopoiesis uas synthesizes cov qe ntshav liab lossis erythrocytes..
YHematopoiesis yog dab tsi?
Lo lus 'hemato' txhais tau tias ntshav thiab 'poiesis' txhais tau tias ua. Yog li, lo lus hematopoiesis yog hais txog cov txheej txheem ntawm kev tsim cov qe ntshav tas li. Nws yog ib qho tseem ceeb ntawm cellular txheej txheem. Muaj peb hom qe ntshav loj: cov qe ntshav liab, qe ntshav dawb, thiab platelets. Tag nrho cov txheej txheem uas ua ke tag nrho cov hom ntshav cell no hu ua hematopoiesis. Cov qe ntshav yog tsim nyob rau hauv cov pob txha pob txha ntawm cov pob txha (cov kab noj hniav hauv nruab nrab ntawm cov pob txha tsim los ntawm cov ntaub so ntswg spongy). Yog li ntawd, cov pob txha pob txha yog qhov chaw ntawm hematopoiesis. Cov txheej txheem no pib los ntawm hematopoietic qia hlwb (hemocytoblasts). Hematopoietic qia hlwb yog pluripotent hlwb, piv txwv li, lawv tuaj yeem tsim tag nrho cov noob qes ntawm cov qe ntshav. Lawv kuj muaj peev xwm rov ua dua tus kheej. Cov qia hlwb no tuaj yeem tshwj xeeb rau hauv ob hom kab mob hu ua myeloid cells thiab lymphoid cells. Yog li, tag nrho cov qe ntshav muaj nyob rau ob hom no. Myeloid hlwb yog rau hom loj hu ua erythrocytes (cov qe ntshav liab), megakaryocytes, monocytes, neutrophils, basophils, thiab eosinophils. Lymphoid cells yog ob hom loj hu ua T-lymphocytes thiab B-lymphocytes.
Daim duab 01: Hematopoiesis
Erythropoiesis yog dab tsi?
cov qe ntshav liab lossis erythrocytes yog qhov tseem ceeb rau kev thauj mus los ntawm cov pa oxygen los ntawm cov kab mob ua pa mus rau cov hlwb thiab cov ntaub so ntswg ntawm lub cev thiab tshem tawm cov pa roj carbon dioxide thiab pov tseg ntawm cov ntaub so ntswg thiab cov hlwb. Lub neej ntawm cov qe ntshav liab yog li 120 hnub. Yog li ntawd, nws yog ib qho tsim nyog los tsim cov qe ntshav liab tsis tu ncua hauv lub cev. Erythropoiesis yog cov txheej txheem uas tsim cov erythrocytes lossis cov qe ntshav liab. Txij li cov qe ntshav liab tsuas yog ib hom qe ntshav erythropoiesis yog ib ceg ntawm hematopoiesis. Lo lus erythropoiesis tau muab los ntawm ob lo lus Greek 'erythro' thiab 'poiesis' xa mus rau 'liab' thiab 'ua' feem. Qhov chaw ntawm erythrocytosis ntawm tus neeg laus yog cov pob txha pob txha.
Ib hemocytoblast lossis hematopoietic qia cell ua ntej dhau los ua myeloid cell (multipotent cell). Tom qab ntawd nws yog tshwj xeeb rau hauv lub cev tsis muaj zog thiab tom qab ntawd mus rau hauv proerythroblast. Proerythroblast hloov mus rau hauv erythroblast, polychromatophilic, thiab orthochromatic, feem. Nyob rau theem no, cov hlwb orthochromatic tawm hauv cov pob txha thiab nkag mus rau hauv cov ntshav thiab dhau los ua erythrocyte paub tab (cov qe ntshav liab paub tab).
Erythropoietin yog cov tshuaj hormones uas ua lub luag haujlwm tseem ceeb hauv erythropoiesis. Nws yog tsim los ntawm ob lub raum thiab nws induces zus tau tej cov qe ntshav liab nyob rau hauv cov lus teb rau tsawg theem ntawm oxygen nyob rau hauv lub cev nqaij daim tawv. Fibronectin (extracellular matrix protein) kuj tseem ceeb rau kev tsim cov qe ntshav liab.
Daim duab 02: Erythropoiesis
Qhov txawv ntawm Hematopoiesis thiab Erythropoiesis yog dab tsi?
YHematopoiesis vs Erythropoiesis |
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| Hematopoiesis yog tag nrho cov txheej txheem ntawm cov qe ntshav tsim. | Erythropoiesis yog txheej txheem ntawm cov ntshav liab tsim. |
| Qeb | |
| Muaj tsib pawg ntawm hematopoiesis. | Erythropoiesis yog ib pawg ntawm hematopoiesis. |
Summary – Hematopoiesis vs Erythropoiesis
Kev kho cov ntshav zoo yog qhov tseem ceeb rau lub neej. Nws nyob ntawm cov kab mob hematopoietic hauv cov pob txha pob txha. Kev tsim cov qe ntshav los ntawm hematopoietic qia hlwb hu ua hematopoiesis. Hematopoiesis tuaj yeem muab faib ua tsib ceg loj. Erythropoiesis yog ib ceg ntawm hematopoiesis uas yog txheej txheem koom nrog hauv kev tsim cov erythrocytes. Hematopoiesis thiab erythropoiesis tshwm sim hauv cov pob txha pob txha ntawm cov pob txha hauv cov tsiaj loj.
