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Video: Yuav muaj dab tsi tshwm sim thaum lub ntsws thim rov qab?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Elastic rov qab txhais tau hais tias lub rebound ntawm lub lub ntsws tom qab tau ncab los ntawm nqus pa, lossis theej, qhov yooj yim nrog uas lub ntsws thim rov qab. Nrog nqus pa, qhov siab hauv siab (lub siab hauv cov kab noj hniav pleural) ntawm lub ntsws txo.
Dhau li, dab tsi yog lub ntsws thim rov qab siab?
Recoil siab yog qhov sib txawv hauv siab nruab nrab ntawm ob sab ntawm ib qho ywj qauv. Hauv kev ua pa physiology, rov qab siab yog siv nrog hwm rau lub ntsws thiab phab ntsa hauv siab.
vim li cas lub ntsws tsis tawg thaum lub sij hawm tas sij hawm? Qhov nro ntawm lub alveoli kuj cuam tshuam lub siab, vim nws tawm tsam qhov nthuav dav ntawm alveoli. Txawm li cas los xij, pulmonary surfactant pab txo qis qhov nro kom cov alveoli tsis txhob tawg thaum lub sij hawm tas sij hawm . Lub peev xwm ntawm cov lub ntsws kom ncab, hu ua lub ntsws kev ua raws cai, kuj plays lub luag haujlwm nyob rau hauv roj txaus.
Hauv qhov no, yam xwm txheej twg tuaj yeem cuam tshuam rau ntsws ntsws thim rov qab?
Ua raws li thiab Elastic Recoil ntawm lub ntsws Ua raws nyob ntawm qhov elasticity thiab qhov nro ntawm lub ntsws. Ua raws li yog inversely cuam tshuam rau lub elastic recoil ntawm lub ntsws, yog li thickening ntawm lub ntsws cov ntaub so ntswg yuav txo ua raws li lub ntsws.
Dab tsi yog qhov tseem ceeb ntawm recoil hauv qhov cua?
Cov rov qab ntawm cov elastic fibers nyob rau hauv lub ntsws txo lub siab nyob rau hauv lub pleural kab noj hniav. Thiaj li, lub siab hauv siab yog kwv yees li 4 mmHg tsawg dua qhov ntsuas huab cua. Ib tug neeg tuaj yeem nqus tau pa ntau dua li qub los ntawm kev cog lus rau cov leeg nqaij (posterior internal) intercostal leeg.
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