Dab tsi yog qhov thaiv cov pa ntawm cov ntshav?

Video: Dab tsi yog qhov thaiv cov pa ntawm cov ntshav?

2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44

Ntshav - Cua Barrier . Cov thaiv nruab nrab ntawm capillary ntshav thiab alveolar huab cua Nws suav nrog cov alveolar EPITHELIUM thiab capillary ENDOTHELIUM nrog rau lawv cov kab mob BASEMENT MEMBRANE thiab EPITHELIAL CELL cytoplasm. PULMONARY GAS EXCHANGE tshwm sim thoob plaws daim nyias nyias.

Tsis tas li ntawd, peb lub hauv paus tseem ceeb ntawm cov hlab ntshav yog dab tsi?

Cheebtsam ntawm lub pa membrane = ntshav / huab cua barrier , nyias nyias, tso cai rau kom nrawm nrawm ntawm cov roj ntsha Hom I squamos hlwb (daim ntawv feem ntau ntawm cov phab ntsa ntawm alveoli) Hauv qab daim nyias nyias Endothelial hlwb ntawm capillary 4.

Tom qab, lo lus nug yog, dab tsi txheej cais cov huab cua alveolar thiab cov ntshav? Nyob rau hauv lub inter-alveolar septum, cov ntaub so ntswg barrier sib cais huab cua thiab ntshav muaj ob tug nruam cell txheej: ib tug epithelium ntsib lub alveolar lumen thiab endothelium tig rau cov hlab ntsha lub lumen. Nruab nrab ntawm lawv yog qhov chaw nruab nrab ntawm qhov sib txawv tuab thiab muaj pes tsawg leeg.

Tom qab ntawd, lo lus nug yog, dab tsi ua rau cov pa cua thaiv?

Ntshav – huab cua barrier . Nws tshwm sim los tiv thaiv huab cua npuas los ntawm kev tsim hauv ntshav , thiab los ntawm ntshav nkag mus rau alveoli. Nws yog tsim los ntawm hom 1 pneumocytes ntawm phab ntsa alveolar, cov hlwb endothelial ntawm capillaries thiab hauv qab daus daim nyias nyias ntawm ob lub hlwb.

Lub alveolar capillary membrane muaj li cas?

Nws muaj ob txheej, lub basal lamina thiab lub reticular lamina, thiab yog tsim los ntawm Hom IV collagen (uas yog tshwj xeeb rau hauv qab daus daim nyias nyias ), laminin, fibronectin, thiab heparan sulfate proteoglycans.

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