Vascular permeability, feem ntau nyob rau hauv daim ntawv ntawm capillary permeability los yog microvascular permeability, characterizes lub peev xwm ntawm cov hlab ntsha phab ntsatso cai rau kev khiav ntawm cov khoom me me (cov tshuaj, cov khoom noj, dej, ions) lossis txawm tias tag nrho cov hlwb (lymphocytes ntawm lawv txoj kev mus rau qhov chaw mob) hauv thiab tawm ntawm lub nkoj …
YPob cov hlab ntsha puas muaj permeability siab?
Yog tias capillary permeability yog nce, xws li hauv kev mob, cov proteins thiab cov molecules loj tau ploj mus rau hauv cov kua nruab nrab. Qhov no txo qis ntawm oncotic siab gradient thiab yog li lub siab hydrostatic nyob rau hauv lub capillaries tawm dej ntau, ua rau cov ntaub so ntswg ntau lawm.
Dab tsi ua rau cov hlab ntsha permeable ntau dua?
Kev nce ntshav nce siab, piv txwv li. Raws li qhov tshwm sim ntawm vasodilation (34, 35), yuav nce vascular permeability. Molecular regulators ntawm vascular permeability muaj xws li kev loj hlob yam thiab inflammatory cytokines.
Lub cev twg muaj cov kab mob permeable tshaj plaws?
Fenestrated capillaries muaj intracellular perforations hu ua fenestrae muaj nyob rau hauv cov qog endocrine, plab hnyuv villi thiab raum glomerulithiab muaj ntau dua permeable dua cov hlab ntsha txuas ntxiv.
Vim li cas capillaries muaj phab ntsa permeable?
Cov phab ntsa capillary yog tsim los ntawm ib txheej ntawm cov hlwb txhawm rau txo qhov sib nrug deb ntawm cov ntaub ntawv permeable. Lawv nyob ib puag ncig ibhauv qab daus membrane uas yog permeable rau cov khoom tsim nyog. Lawv tuaj yeem muaj qhov pores los pab ntxiv hauv kev thauj khoom ntawm cov ntaub so ntswg thiab cov ntshav.
