Video: Cov hlab ntsha muaj peev xwm yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Capacitance hlab ntsha tau txiav txim siab tias yog cov ntshav nkoj uas khaws cov ntshav feem ntau thiab tuaj yeem hloov pauv qhov hloov pauv hauv cov ntshav. Lawv feem ntau suav tias yog cov leeg.
Yog li ntawd, vim li cas cov hlab ntsha thiaj li hu ua cov hlab ntsha muaj peev xwm?
Cov leeg yog thiab hu ua cov hlab ntsha muaj peev xwm vim lawv muaj 60% ntawm lub cev cov ntshav. Hauv kev ua haujlwm ib puag ncig, cov ntshav oxygenated tau tso los ntawm sab laug lub ventricle los ntawm cov hlab ntsha mus rau cov leeg thiab cov kabmob ntawm lub cev, qhov twg nws cov as -ham thiab roj cua tau sib pauv ntawm cov hlab ntshav.
vascular capacitance yog dab tsi? Paub daws teeb. Vascular capacitance hais txog qib ntawm kev ruaj khov ntawm cov hlab ntsha (feem ntau yog cov leeg) uas cuam tshuam rov qab los ntawm cov ntshav mus rau lub plawv thiab yog li tso tawm lub plawv.
Ib yam nkaus, cov hlab ntsha twg yog cov hlab ntsha muaj peev xwm?
Cov hlab ntsha tsis kam suav nrog me me cov hlab ntsha , cov hlab ntsha , thiab cov kab mob sib kis ua ntej. Cov hlab ntsha muaj peev xwm suav nrog me me thiab loj leeg . Cov hlab ntsha muaj peev xwm muaj peev xwm cuam tshuam tau zoo. Txog qhov zoo sib xws hauv siab, cov hlab ntsha muaj peev xwm tuaj yeem haum 20 zaug ntau dua cov ntshav tiv thaiv cov hlab ntsha.
Cov hlab ntsha twg yog suav tias yog qhov chaw ntawm lub peev xwm?
Venules tsim cov leeg loj dua uas ua haujlwm ua ntej cov hlab ntsha muaj peev xwm ntawm lub cev - piv txwv li, qhov chaw qhov twg feem ntau ntawm ntshav ntim tau pom thiab qhov twg hauv cheeb tsam ntshav ntim tau tswj.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov hlab ntsha thiab cov hlab ntsha capillaries?
Piav qhia: Cov hlab ntshav nqa ntshav nyob hauv siab los ntawm lub plawv mus rau cov kabmob thiab cov nqaij. Lawv cov phab ntsa feem ntau yog tuab dua li cov leeg. Capillaries yog qhov sib txuas ntawm cov hlab ntsha thiab cov leeg thiab me me heev, Cov ntaub so ntswg qee zaum pom tawm thiab rov nco qab los ntawm cov qog ntshav thiab rov qab los rau cov leeg ntshav
Cov hlab ntsha hlab ntsha thiab cov hlab ntshav muaj dab tsi?
Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; Lub ntsiab hlab ntsha yog aorta. Capillaries nqa ntshav tawm ntawm lub cev thiab pauv cov as-ham, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg ntshav yog cov hlab ntshav uas coj cov ntshav rov qab los rau hauv lub plawv thiab tso ntshav tawm ntawm cov kabmob thiab cov ceg
Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?
Muaj plaub hom neuroglia pom nyob hauv nruab nrab lub paj hlwb: Astrocytes - tswj cov ntshav lub hlwb teeb meem thiab khaws cov tshuaj ib puag ncig los ntawm kev siv cov ions rov qab thiab cov tshuaj xa xov mus rau lub cev. Oligodendrocytes - myelinate axons nyob rau hauv lub hauv nruab nrab lub paj hlwb thiab muab tag nrho cov txheej txheem txheej txheem
Dab tsi yog cov hlab ntsha thiab cov hlab ntsha capillaries?
Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; Lub ntsiab hlab ntsha yog aorta. Capillaries nqa ntshav tawm ntawm lub cev thiab pauv cov as-ham, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg ntshav yog cov hlab ntshav uas coj cov ntshav rov qab los rau hauv lub plawv thiab tso ntshav tawm ntawm cov kabmob thiab cov ceg
Dab tsi yog cov hlab ntsha tseem ceeb ntawm cov hlab ntsha?
Cov hlab ntsha, cov hlab ntsha thiab lymphatic system yog cov hlab ntsha tseem ceeb hauv lub cev circulating system. parasympathetic - lub luag haujlwm rau vasoconstriction