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Video: Peb hu dab tsi txaus siab thiab ua haujlwm tsis zoo hauv cov hlab plawv?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntshav ntws yog kev txav ntawm cov ntshav los ntawm lub nkoj, cov ntaub so ntswg, lossis lub cev. Qhov qeeb lossis thaiv cov ntshav ntws yog hu ua tsis kam . Ntshav siab yog qhov quab yuam uas cov ntshav nthuav tawm ntawm phab ntsa ntawm cov hlab ntshav lossis chav ntawm lub plawv.
Tsis tas li ntawd, qhov kev sib raug zoo ntawm lub siab ntws thiab qhov tsis kam yog dab tsi?
Cov kev sib raug zoo ntawm ntws (Q), tsis kam (R), thiab siab qhov sib txawv (∆P) qhia los ntawm Ohm txoj cai (Q = ∆P/R). Qhov loj ntawm cov ntshav ntws yog ncaj qha proportional rau cov siab sib txawv. Kev taw qhia ntawm cov ntshav ntws yog txiav txim siab los ntawm cov kev taw qhia ntawm siab gradient los ntawm siab rau qis siab.
kev tiv thaiv cuam tshuam li cas cov ntshav ntws? Kuj yog lub zog uas tawm tsam cov ntws ntawm cov dej. Hauv ntshav cov hlab ntsha, feem ntau ntawm cov tsis kam yog vim lub nkoj txoj kab uas hla. Raws li lub nkoj txoj kab nqes qis, tus tsis kam nce thiab ntshav ntws txo. Lub zog me me tseem nyob ntawm lub sijhawm ntshav tawm cov capillaries thiab nkag mus rau hauv venules.
Kuj tseem yuav paub, dab tsi yog qhov tsis kam ntawm cov hlab plawv?
Vascular tsis kam yog tsis kam uas yuav tsum tau kov yeej cov ntshav los ntawm lub circulatory system thiab tsim txaus.
Ob yam dab tsi yuav ua rau ntshav txaus?
Cov variables cuam tshuam cov ntshav khiav thiab cov ntshav siab nyob rau hauv lub systemic ncig yog cardiac output, ua raws li, cov ntshav ntim, ntshav viscosity, thiab qhov ntev thiab txoj kab uas hla ntawm cov hlab ntsha.
Pom zoo:
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