A venule yog cov hlab ntsha me me hauv microcirculation uas tso cai rau cov ntshav deoxygenated deoxygenated ntshav Feem ntau cov hlab ntsha nqa cov ntshav deoxygenated los ntawm cov ntaub so ntswg rov qab mus rau lub plawv; Kev zam yog cov hlab ntsws thiab cov hlab ntaws, ob qho tib si uas nqa cov ntshav oxygenated mus rau lub plawv. Nyob rau hauv sib piv rau cov leeg, cov hlab ntsha nqa cov ntshav tawm ntawm lub plawv. Cov leeg nqaij tsawg dua cov hlab ntsha thiab feem ntau nyob ze rau ntawm daim tawv nqaij. https://en.wikipedia.org › wiki › Vein
Vim - Wikipedia
rov qab los ntawm lub txaj capillary mus rau cov hlab ntsha loj hu ua veins. Venules muaj li ntawm 8 mus rau 100μm nyob rau hauv txoj kab uas hla thiab yog tsim thaum capillaries tuaj ua ke.
Lub luag haujlwm ntawm venule yog dab tsi?
chaw nyob rau hauv cov hlab plawv
siab, nkag mus rau cov hlab ntsha me me hu ua venules uas converge rau cov leeg, thaum kawg coj cov ntshav ntawm nws txoj kev rov qab mus rau lub plawv. Raws li cov capillaries converge, me me venules yog tsim uas nws muaj nuj nqi nws yog khaws cov ntshav los ntawm lub txaj capillary (piv txwv li, tes hauj lwm ntawm capillaries)
Kev ua haujlwm ntawm Arteriole thiab venule yog dab tsi?
Cov hlab ntsha thauj cov ntshav tawm ntawm lub plawv thiab ceg mus rau hauv cov hlab ntsha me, tsim cov hlab ntsha. Arterioles faib cov ntshav rau cov txaj capillary, qhov chaw sib pauv nrog cov ntaub so ntswg lub cev. Capillaries coj rov qab mus rau cov hlab ntsha me me hu ua venules uas ntws mus rau hauv cov hlab ntsha loj dua thiab thaum kawg rov qab mus rau lub plawv.
Pob venules mus rau lub siab?
Los ntawm cov phab ntsa nyias ntawm cov hlab ntsha, cov pa oxygen thiab cov as-ham dhau los ntawm cov ntshav mus rau hauv cov ntaub so ntswg, thiab cov khoom pov tseg dhau los ntawm cov ntaub so ntswg mus rau hauv cov ntshav. Los ntawm cov hlab ntsha, cov ntshav nkag mus rau hauv venules, tom qab ntawd mus rau veins rov mus rau lub siab.
Puas muaj lub venule?
Valves yog pom feem ntau nyob rau hauv thaj tsam ntawm anastomosis ntawm me me mus rau loj venulesthiab kuj nyob rau hauv cov venules loj dua unassociated nrog ceg ceg. Cov npoo dawb ntawm cov li qub yog ib txwm coj mus deb ntawm cov hlab ntsha me thiab mus rau qhov loj, thiab ua haujlwm kom cov ntshav ntws mus rau qhov tob tob.
