Video: Dab tsi yog ob txoj hlab ntsha tseem ceeb ntawm cov hlab ntsha?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov aorta (cov ntshav tseem ceeb muab rau lub cev) ceg tawm ua ob lub hauv paus loj cov hlab ntsha (tseem hu ua cov hlab ntsha). Cov hlab ntsha coronary no tawm mus rau hauv cov hlab ntsha me, uas muab cov ntshav oxygen nplua nuj rau tag nrho lub plawv cov leeg. Txoj cai kab mob hauv lub plawv muab ntshav feem ntau rau sab xis ntawm lub plawv.
Ib yam li ntawd, cov hlab ntsha coronary yog dab tsi?
Cov coronary hlab ntsha yog cov ntshav cov nkoj ( cov hlab ntsha ) ntawm coronary ncig, uas thauj cov pa oxygen mus rau cov khoom ntawm lub plawv. Lub plawv yuav tsum muaj cov pa oxygen txuas ntxiv mus ua haujlwm thiab muaj sia nyob, zoo li lwm yam ntaub so ntswg lossis lub cev ntawm lub cev. Cov coronary hlab ntsha qhwv ib ncig ntawm tag nrho lub siab.
Tom qab ntawd, lo lus nug yog, dab tsi yog cov hlab plawv loj? Cov Coronary hlab ntsha yog cov hlab ntsha uas muab ntshav rau koj lub plawv. Lawv ceg tawm ntawm aorta ntawm nws lub hauv paus. Txoj cai kab mob plawv , sab laug lub plawv loj , sab laug anterior nqis, thiab sab laug circumflex cov leeg , yog cov plaub cov hlab ntsha loj loj.
Tib neeg kuj nug, dab tsi yog txoj kev coronary ncig?
Coronary ncig yog kev ncig ntawm cov ntshav hauv cov hlab ntshav uas muab cov leeg nqaij hauv plawv (myocardium). Coronary cov hlab ntsha muab cov ntshav oxygenated rau lub plawv cov leeg, thiab mob plawv cov hlab ntshav ntws tawm cov ntshav thaum nws tau deoxygenated.
Muaj pes tsawg coronary hlab ntsha?
Muaj yog ob lub ntsiab coronary hlab ntsha - sab laug lub ntsiab kab mob plawv thiab txoj cai kab mob plawv.
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
Vim li cas peb thiaj sau cov ntshav los ntawm cov hlab ntsha thiab tsis yog los ntawm cov hlab ntsha?
Cov leeg yuav tsum tau li qub kom cov ntshav ntws mus rau lub plawv. Theses li qub yog qhov tshwj xeeb hauv ob txhais ceg thiab caj npab. Lawv tawm tsam lub ntiajteb txawj nqus los tiv thaiv cov ntshav rov qab los. Cov hlab ntsha tsis xav tau li qub vim tias lub siab los ntawm lub plawv ua kom cov ntshav ntws los ntawm lawv mus rau ib qho
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