Qhov sib txawv tseem ceeb ntawm systole thiab diastole yog tias systole yog hais txog kev sib cog lus ntawm atria thiab ventricles, yuam cov ntshav nkag mus rau hauv lub cev thiab lub ntsws, thaum diastole hais txog kev so ntawm atria thiab ventricles, tso cai rau kev txhaws ntawm lub ntsws. lub plawv chav nrog ntshav.
Lub voj voog ntawm lub plawv yog lub sijhawm uas pib nrog kev cog lus ntawm atria thiab xaus nrog ventricular so. Qhov no suav nrog systole thiab diastole ntawm atria thiab systole thiab diastole ntawm ventricles. Feem ntau, nrog lub plawv dhia ntawm 75 neeg ntaus ib feeb, ib lub plawv dhia yuav siv sij hawm 0.8 vib nas this kom tiav. Thaum lub sij hawm lub voj voog, ob lub atria cog lus tib lub sijhawm. Thaum lawv so, ob lub ventricles pib cog lus ib txhij. Systole yog hais txog lub sijhawm contraction, thaum diastole hais txog lub sijhawm so.
Systole yog dab tsi?
Systole yog theem kev cog lus ntawm atria thiab ventricles. Nws tshwm sim vim qhov kis ntawm excitation thoob plaws lub plawv. Atrial systole piav qhia txog qhov kev txiav txim ntawm atria contraction thaum lub ventricle systole piav qhia tias ntawm ventricle contraction.
Daim duab 01: Diastole thiab Systole
Thaum lub sijhawm atrial systole, cov ntshav hauv lub atria ntws mus rau hauv lub ventricles los ntawm atrioventricular li qub. Atrial systole feem ntau kav ntev li 0.1 vib nas this. Thaum lub sij hawm ntawm atrial systole, lub ventricles nyob rau hauv lub diastole. Lub sijhawm ntawm ventricular systole yog li 0.3 thib ob. Thaum lub ventricular systole, lub siab nce nyob rau hauv lub ventricles. Yog li ntawd, nws kaw lub atrioventricular li qub thiab qhib lub semilunar li qub, tso cai rau cov ntshav nkag mus rau hauv lub ntsws thiab ascending aorta thiaj li nqa nws deb ntawm lub plawv.
Diastole yog dab tsi?
Diastole yog lub sijhawm so ntawm atria thiab ventricles. Nws tshwm sim tom qab repolarization tom qab ntawm lub plawv cov leeg.
Daim duab 02: Lub Cycle Pressure
Diastole tshwm sim tom qab los ntawm atrial thiab ventricular systole thiab nyob twj ywm rau 0.4 vib nas this. Thaum lub sij hawm ventricular diastole, atria yog nyob rau hauv diastole thiab tau txais cov ntshav los ntawm venae cavae thiab pulmonary veins. 70% ntawm cov ntshav nkag mus rau hauv lub ventricles thaum lub sij hawm diastole thaum lub sij hawm ntxiv 30% nkag mus rau hauv lub atrial systole.
Dab tsi yog qhov zoo sib xws ntawm Systole thiab Diastole?
- Systole thiab diastole yog ob yam xwm txheej ntawm lub plawv dhia.
- Diastole yog ua raws li systole.
- Ob leeg ua lub luag haujlwm tseem ceeb hauv cov ntshav.
Qhov txawv ntawm Systole thiab Diastole yog dab tsi?
Systole yog theem kev cog lus ntawm atria thiab ventricle, whereas diastole yog lawv lub sijhawm so. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm systole thiab diastole. Ntxiv mus, systole tshwm sim vim kev sib kis ntawm excitations, whereas so tshwm sim vim lub tom ntej repolarization ntawm lub plawv cov leeg. Qhov no kuj yog qhov txawv ntawm systole thiab diastole.
Feem ntau, aria systole kav li ntawm 0.1 vib nas this thaum atrial diastole kav rau qhov seem 0.7 vib nas this. Ventricular systole kav ntev li ntawm 0.3 vib nas this thaum ventricular diastole kav rau qhov seem 0.5 vib nas this. Yog li, qhov no yog lwm qhov sib txawv ntawm systole thiab diastole.
Summary – Systole vs Diastole
Lub voj voog plawv muaj ob theem tseem ceeb xws li systole thiab diastole. Systole yog theem contraction, thaum diastole yog lub sij hawm so. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm systole thiab diastole. Systole tshwm sim los ntawm ob qhov xwm txheej tseem ceeb: atrial systole thiab ventricular systole. Ib yam li ntawd, diastole tshwm sim ntawm ob yam xwm txheej: atrial diastole thiab ventricular diastole. Ib txwm systolic siab yog li 120 mmHg thaum lub siab diastolic li 80 mmHg. Thaum lub systole, cov ntshav thawb los ntawm lub plawv chamber mus rau aorta thiab pulmonary hlab ntsha. Thaum lub sij hawm diastole, lub plawv chambers puv nrog cov ntshav los ntawm vena cava thiab pulmonary leeg.
