Muaj ob hom alveolar hlwb: hom I (hom prevailing) thiab hom II alveolar hlwb. Hom I alveolar cells yog squamous tsis tshua muaj hlwb uas cuam tshuam rau hauv cov txheej txheem ntawm cov pa pauv ntawm cov alveoli thiab ntshav. Hom II alveolar hlwb koom nrog hauv kev tso tawm ntawm cov proteins surfactant.
3 hom alveolar hlwb yog dab tsi?
Txhua lub alveolus muaj peb hom ntawm tes:
- Type 1 pneumocytes.
- Type 2 pneumocytes.
- Alveolar macrophages.
Puas yog Hom 1 alveolar cells yooj yim squamous?
Alveolar Epithelial Cells
Feem ntau ntawm cov alveolar saum npoo yog npog los ntawm cov cell squamous yooj yim hu ua hom I pneumocytes (Daim duab 1-9). Cov hlwb no muaj cov nucleus me me nrog cov txheej txheem cytoplasmic heev uas npog 4000 txog 5000 µm2.
hom cell twg yog hom 2 alveolar cells?
Hom II hlwb yog spherical pneumocytesuas tsuas yog 4% ntawm thaj chaw alveolar, tab sis lawv yog 60% ntawm alveolar epithelial hlwb thiab 10-15% ntawm tag nrho cov ntsws..
Dab tsi yog qhov txawv ntawm hom 1 thiab hom 2 alveolar hlwb?
Qhov sib txawv tseem ceeb ntawm hom 1 thiab hom 2 pneumocytes yog qhov hom 1 pneumocytes yog nyias thiab flattened alveolar hlwb uas yog lub luag haujlwm rau kev sib pauv roj ntawm alveoli thiab capillaries, thaum hom 2 pneumocytes yog cuboidal alveolar cells uas yog lub luag haujlwm rau kev tso tawm ntawm pulmonary surfactants uas…
