![Kev sib raug zoo ntawm cov ntshav khiav thiab kev tiv thaiv yog dab tsi? Kev sib raug zoo ntawm cov ntshav khiav thiab kev tiv thaiv yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14171487-what-is-the-relationship-between-blood-flow-and-resistance-j.webp)
Video: Kev sib raug zoo ntawm cov ntshav khiav thiab kev tiv thaiv yog dab tsi?
![Video: Kev sib raug zoo ntawm cov ntshav khiav thiab kev tiv thaiv yog dab tsi? Video: Kev sib raug zoo ntawm cov ntshav khiav thiab kev tiv thaiv yog dab tsi?](https://i.ytimg.com/vi/erDUXyjIwKQ/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntshav ntws qeeb tshaj plaws hauv cov hlab ntshav, uas tso cai rau lub sijhawm sib pauv roj thiab cov as -ham. 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 diam. Raws li lub nkoj txoj kab nqes qis, tus tsis kam nce thiab ntshav ntws txo.
Tsuas yog li ntawd, ua li cas tiv thaiv cov ntshav ntws?
Qhov qeeb los yog thaiv ntawm ntshav ntws hu ua tsis kam . Hauv cov hlab ntsha, zoo li tsis kam nce, ntshav siab nce thiab ntws txo. Nyob rau hauv lub venous system, constriction nce ntshav siab raws li nws ua hauv cov hlab ntsha; qhov nce siab pab rov qab los ntshav mus rau lub plawv.
Tom qab ntawd, lo lus nug yog, kev sib raug zoo ntawm viscosity thiab ntshav ntws yog dab tsi? Cov kev sib raug zoo ntawm BP thiab viscosity yog li ntawd, muab qhov systolic BP tsis tu ncua, yog tias ntshav viscosity nce, ces tag nrho peripheral tsis kam (TPR) yuav tsum tau nce, yog li txo ntshav ntws . Conversely, thaum viscosity txo qis, ntshav ntws thiab perfusion yuav nce.
Ua li no, cov ntshav ntws cuam tshuam li cas rau lub siab thiab kev tiv thaiv?
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 ntau ntawm ntshav ntws yog ncaj qha proportional rau cov siab sib txawv. Cov kev taw qhia ntawm ntshav ntws yog txiav txim los ntawm cov kev taw qhia ntawm lub siab gradient los ntawm siab rau qis siab.
Ob yam dab tsi yuav ua rau ntshav txaus?
Cov variables cuam tshuam cov ntshav khiav thiab cov ntshav siab nyob rau hauv cov txheej txheem ntawm cov hlab plawv yog qhov tso tawm ntawm lub plawv, ua raws, ntim ntshav, ntshav viscosity, thiab qhov ntev thiab txoj kab uas hla ntawm cov hlab ntshav.
Pom zoo:
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