Qhov sib txawv tseem ceeb ntawm Bundle ntawm Nws thiab Purkinje Fibers yog qhov Bundle ntawm Nws yog ib qho kev sau ntawm cov leeg nqaij leeg tshwj xeeb rau kev siv hluav taws xob thaum Purkinje fibers yog nyias filaments los ntawm sab laug posterior fascicle thiab sab laug fascicles uas pab nyob rau hauv. Distributing impulses rau cov leeg ventricular.
Muaj ib qho hluav taws xob conduction hauv peb lub siab, uas yog lub npe hu ua cardiac conduction system. Nws generates thiab propagates hluav taws xob impulses thiaj li yuav cog lus thiab so lub plawv nyob rau hauv ib tug rhythmic txoj kev. Nws muaj xws li SA node, AV node, Bundle ntawm Nws, sab laug bundle ceg, txoj cai nras ceg, anterior thiab posterior fascicles, Purkinje fibers, thiab lwm yam.
Npaj ntawm Nws tau txais kev txhawb nqa los ntawm AV node. Nws yog ib qho kev sau ntawm nyias, tshwj xeeb cov leeg nqaij. Bundle ntawm Nws ntxiv faib rau sab laug thiab sab xis bundle ceg. Sab laug pob ceg rov faib rau sab laug sab laug thiab sab laug posterior fascicles. Cov sab laug sab laug thiab sab laug posterior fascicles ua rau Purkinje fibers, uas yog nyias filaments uas faib impulses rau cov leeg ventricular.
Pab Nws yog dab tsi?
Txhiaj Ntsig ntawm Nws lossis Nws cov pob khoom yog ib qho kev sau ntawm cov leeg mob plawv tshwj xeeb rau kev siv hluav taws xob. Nws yog ib feem tseem ceeb ntawm lub plawv hluav taws xob conduction system. Nws xa hluav taws xob pulses los ntawm atrioventricular node (AV node) mus rau ventricles ntawm lub plawv.
Daim duab 01: Pob Kws Nws
Npua Nws cov ceg ua ob ntu raws li sab laug thiab sab xis pob. Sab laug pob ceg rov faib rau sab laug sab laug thiab sab laug posterior fascicles. Tom qab ntawd cov fascicles thiab bundles no ua rau nyias filaments hu ua Purkinje fibers uas faib lub impulse mus rau lub ventricular nqaij.
Purkinje Fibers yog dab tsi?
Purkinje fibers yog ib qho kev sib txuas ntawm nyias filaments ntawm cov leeg hlwb sib cais hauv cov phab ntsa ventricle. Nws yog ib feem ntawm lub ventricular conduction system ntawm lub plawv. Sab laug anterior thiab sab laug posterior fascicles ua rau Purkinje fibers. Lub luag haujlwm tseem ceeb ntawm Purkinje fibers yog faib cov hluav taws xob impulses rau ventricular myocardium thiab qhib sab laug thiab sab xis ventricles.
Daim duab 02: Purkinje Fibres
Purkinje fibers yog tshwj xeeb rau kev ua kom nrawm nrawm. Yuav kom ua tau li ntawd, lawv muaj ntau qhov sib txawv junctions thiab dav diameters. Ntxiv mus, lawv muaj tsawg dua myofibrils thiab tsis muaj T-tubules. Txawm li cas los xij, lawv muaj ntau ntawm glycogen thiab mitochondria. Qhov tseem ceeb tshaj plaws, Purkinje fibers loj dua cov leeg mob plawv.
Dab tsi yog qhov zoo sib xws ntawm Bundle ntawm Nws thiab Purkinje Fibres?
- Pob ntawm Nws thiab Purkinje fibers yog ib feem ntawm cov kab mob plawv pom nyob hauv plawv.
- Lawv pib thiab sib koom tes hluav taws xob mem tes xav tau rau lub suab sib dhos thiab synchronized contractions ntawm atria thiab ventricles.
- Ob leeg tau txais cov cim qhia tawm los ntawm AV node.
Dab tsi yog qhov txawv ntawm pob ntawm Nws thiab Purkinje Fibres?
Txhiaj Ntsig Nws yog ib qho kev sib sau ntawm cov leeg nqaij leeg tshwj xeeb uas xa hluav taws xob impulses los ntawm AV node hauv plawv mus rau cov leeg hlwb ntawm lub plawv phab ntsa. Lub caij no, Purkinje fibers yog nyias filaments uas faib hluav taws xob impulses rau ventricle myocardium thiab qhib txoj cai thiab sab laug ventricles. Yog li, qhov no yog qhov txawv ntawm Bundle ntawm Nws thiab Purkinje fibers.
Ntxiv mus, AV node txuas ntxiv nrog Pob ntawm Nws, thaum sab laug sab laug thiab tom qab fascicles txuas ntxiv nrog Purkinje fibers. Yog li, qhov no kuj yog qhov sib txawv tseem ceeb ntawm Bundle ntawm Nws thiab Purkinje fibers.
Summary – Bundle of His vs Purkinje Fibres
Cov pob khoom ntawm Nws thiab Purkinje fibers yog cov nqaij leeg tshwj xeeb hauv plawv lub luag haujlwm rau lub cim ntawm lub plawv impulses. Qhov tseeb, lawv tau tshwj xeeb hauv kev ua cov fibers pom nyob rau hauv lub plawv conduction system. Bundle ntawm Nws hla hluav taws xob impulses los ntawm AV node mus rau sab xis thiab sab laug bundle ceg. Sab laug bundle ceg xa impulses mus rau Purkinje fibers, uas yog nyias filaments cais nyob rau hauv lub ventricle phab ntsa thiab faib impulses mus rau lub ventricular myocardium. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm pob khoom ntawm Nws thiab Purkinje fibers.
