Qhov sib txawv tseem ceeb ntawm oncotic thiab hydrostatic siab yog tias oncotic siab yog ib hom kev siab uas tau tawm los ntawm cov proteins los ntawm cov ntshav plasma los yog cov kua dej interstitial, thaum lub siab hydrostatic yog ib hom ntawm cov ntshav plasma thiab Cov kua dej interstitial ntawm cov phab ntsa capillary.
Capillary dynamics tseem ceeb heev hauv microcirculation uas tshwm sim hauv cov ntshav capillaries. Raws li Starling lub hauv paus ntsiab lus, muaj ib qho tseem ceeb zog modulating capillary dynamics. Cov rog no yog oncotic lossis colloid osmotic siab thiab hydrostatic siab. Lub net filtration siab yog txiav txim los ntawm cov sum ntawm cov rog. Oncotic siab thawb cov kua rau hauv cov ntshav capillaries, hos hydrostatic siab thawb cov kua tawm ntawm cov ntshav capillaries. Yog li, ob qho tib si oncotic thiab hydrostatic siab txiav txim siab cov kua ntws mus rau hauv thiab tawm ntawm cov ntshav capillaries.
Oncotic Pressure yog dab tsi?
Lub siab oncotic yog ib hom kev siab uas tau tawm los ntawm cov proteins hauv cov ntshav plasma lossis cov kua dej nruab nrab. Nws tseem yog lub zog uas thawb cov kua dej mus rau hauv cov ntshav capillaries. Oncotic siab feem ntau nyob ntawm cov ntshav proteins xws li albumin. Kwv yees li 75% ntawm cov ntshav plasma oncotic siab yog vim albumin. Nws tseem hu ua colloid osmotic siab. Lub siab oncotic exerted los ntawm loj proteins nyob rau hauv tib neeg plasma muaj ib tug nqi ntawm 26 mus rau 28 mmHg. Feem ntau, thaum cov dej molecules hauv plasma raug tshem tawm ntawm cov hlab ntsha, nws tsim cov dej molecular tsis txaus. Yog li, cov dej molecules txav rov qab mus rau hauv cov hlab ntsha hauv cov hlab ntsha qis kawg ntawm capillaries, tsim kom muaj oncotic siab.
Daim duab 01: Oncotic Pressure
Tsis tas li ntawd, oncotic siab muaj qhov cuam tshuam ntawm cov ntshav siab hydrostatic. Oncotic siab ua rau cov kua dej interstitial txav mus rau hauv cov ntshav capillaries. Feem ntau, cov kua dej interstitial muaj cov khoom pov tseg hauv metabolic thiab CO 2 Yog li, oncotic siab pab tshem tawm cov khoom pov tseg hauv cov ntaub so ntswg.
Hydrostatic Pressure yog dab tsi?
Hydrostatic siab yog ib hom kev ua haujlwm siab los ntawm cov ntshav plasma thiab cov kua nruab nrab ntawm cov phab ntsa capillary. Qhov tseeb, nws yog lub zog uas thawb cov kua dej tawm ntawm cov ntshav capillaries. Qhov kev quab yuam no pab txhawb kev txav ntawm cov kua dej los ntawm cov ntshav capillaries mus rau cov kua dej interstitial. Lub siab no pab kom pom kev. Ntxiv mus, hydrostatic siab yog siab tshaj plaws nyob rau hauv arteriolar kawg thiab qis tshaj ntawm lub venular kawg. Feem ntau, ntawm cov hlab ntsha kawg ntawm cov hlab ntsha, lub siab hydrostatic yog 30 mmHg. Raws li cov ntshav txav mus raws li capillary, cov kua txav tawm los ntawm capillary pores mus rau hauv qhov chaw nruab nrab. Yog li, qhov kev txav no ua rau txo qis hauv cov ntshav siab thaum cov ntshav txav raws cov hlab ntsha ntawm cov hlab ntsha mus rau qhov kawg ntawm venous.
Daim duab 02: Hydrostatic Pressure
Tsis tas li ntawd, net pom yog txiav txim siab los ntawm hydrostatic siab nyob rau hauv cov ntshav capillaries thiab osmotic siab ntawm cov kua interstitial. High filtration siab tuaj yeem pom thaum muaj qhov sib txawv siab. Qhov no yuav pab kom pom tseeb ntawm cov ntshav capillaries.
Dab tsi zoo sib xws ntawm Oncotic thiab Hydrostatic Pressure?
- Ob qho tib si hydrostatic thiab oncotic siab pab kev txav ntawm cov kua hauv thiab tawm ntawm cov ntshav capillaries.
- Ob lub hydrostatic thiab oncotic siab yog siv nyob rau hauv microcirculation ntawm capillaries.
- Lawv yog lub zog tseem ceeb hauv Starling txoj hauv kev koom nrog hauv kev ua kom muaj zog capillary.
- Txoj kev tsis zoo ntawm ob qho tib si tuaj yeem ua rau muaj kab mob.
Qhov txawv ntawm Oncotic thiab Hydrostatic Pressure yog dab tsi?
Lub siab oncotic yog ib hom kev siab tshaj tawm los ntawm cov proteins hauv cov ntshav plasma lossis cov kua dej nruab nrab, thaum lub siab hydrostatic yog ib hom kev ua haujlwm siab los ntawm cov ntshav ntshav thiab cov kua dej interstitial ntawm cov phab ntsa capillary. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm oncotic thiab hydrostatic siab. Tsis tas li ntawd, oncotic siab yog lub zog uas thawb cov kua rau hauv cov ntshav capillaries, thaum hydrostatic siab yog lub zog uas thawb cov kua dej tawm ntawm cov ntshav capillaries.
Cov hauv qab no infographic teev qhov sib txawv ntawm oncotic thiab hydrostatic siab nyob rau hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Oncotic vs Hydrostatic Pressure
Oncotic thiab hydrostatic siab ua ke txiav txim siab cov kua dej ntws hauv thiab tawm ntawm cov ntshav capillaries. Ntawm lawv, lub siab oncotic yog lub zog uas thawb cov kua rau hauv cov ntshav capillaries, thaum lub siab hydrostatic yog lub zog uas thawb cov kua dej tawm ntawm cov ntshav capillaries. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm oncotic thiab hydrostatic siab.
