Koj puas paub tias muaj ib lub cev zoo kawg nkaus hauv koj lub cev uas ua haujlwm tas li, txawm tias koj pw tsaug zog, ua haujlwm, lossis ua si? Nws yog lub cev ncig ntshav, uas muab txoj sia rau peb lub cev thiab nqa cov ntshav thoob plaws peb lub cev. Ib yam li lub raj xa dej uas muab dej rau lub nroog, nws xa cov as-ham rau txhua lub cell hauv peb lub cev thiab tshem tawm cov khoom pov tseg. Cia peb tham txog qhov no hauv cov lus yooj yim.
Lub circulatory system no yog dab tsi?
Hais yooj yim xwb, lub cev ncig ntshav yog lub cev uas muaj koj lub plawv thiab cov hlab ntsha . Ib txhia neeg kuj hu nws ua lub cev ncig ntshav. Ob lub npe no hais txog tib lub cev.
Nws lub luag haujlwm tseem ceeb yog siv cov ntshav los xa cov as-ham mus rau ntau txhiab lab lub hlwb hauv peb lub cev thiab tshem tawm cov khoom pov tseg ntawm cov hlwb ntawd. Hauv lwm lo lus, nws zoo li lub cev thauj mus los hauv peb lub cev. Koj lub plawv ua haujlwm ua lub twj tso kua mis tseem ceeb, thawb cov ntshav thoob plaws lub cev los ntawm lub network ntawm cov hlab ntsha no. Cov ntshav no muab peb cov leeg , cov ntaub so ntswg, thiab cov kabmob nrog cov pa oxygen thiab cov as-ham . Nws kuj tseem nqa cov khoom pov tseg, xws li carbon dioxide , uas tau tsim tawm hauv cov kabmob no thiab xa lawv mus rau cov kabmob uas tuaj yeem tshem tawm lawv ntawm lub cev.
Cov haujlwm tseem ceeb ntawm lub kaw lus no yog dab tsi?
Muaj peb lub luag haujlwm tseem ceeb uas ua los ntawm lub kaw lus no.
- Nqus cov ntshav thoob plaws lub cev: Peb lub plawv dhia nruab hnub thiab hmo ntuj, txawm tias thaum peb tsaug zog, thiab nws ua txoj haujlwm no.
- Xa cov khoom tseem ceeb: Xa cov pa oxygen thiab cov as-ham rau peb cov kab mob, cov leeg, thiab cov nqaij.
- Tshem tawm cov khoom tsis tsim nyog: Sau thiab tshem tawm cov khoom pov tseg xws li carbon dioxide ntawm lub cev.
Xav txog nws zoo li kev taug kev mus tas li. Cov ntshav, uas pib hauv lub plawv, taug kev hla cov hlab ntsha loj (arteries) mus rau peb cov kabmob. Nyob ntawd, ib lub network ntawm cov hlab ntsha me me, hu ua capillaries, xa cov pa oxygen thiab cov as-ham rau cov cell thiab sau cov khoom pov tseg los ntawm cov cell ntawd. Tom qab ntawd, cov ntshav nrog cov khoom pov tseg ntawd rov qab mus rau lub plawv los ntawm lwm hom hlab ntsha (veins). Los ntawm lub plawv, cov ntshav raug xa mus rau lub ntsws, qhov chaw uas nws tau rov qab oxygen thiab rov qab mus rau lub plawv, pib txoj kev taug kev tshiab. Cov txheej txheem no tshwm sim txhua ob uas koj lub plawv dhia.
Koj puas paub? Koj lub plawv tso ntshav ntau tshaj 7,500 litres thoob plaws hauv koj lub cev txhua hnub. Qhov nyiaj no yuav nce ntxiv thaum koj tawm dag zog.
Lub cev no muab qhov tseem ceeb tshaj plaws rau kev muab cov ntshav mus rau lub hlwb thiab lub plawv ntawm peb lub cev. Vim tias yog tias cov ntshav mus rau lub hlwb tsis mus, koj tuaj yeem poob siab hauv ob peb feeb xwb. Yog tias cov ntshav ntws tsis mus ntev tshaj plaub feeb, lub hlwb tuaj yeem puas tsuaj. Ib yam li ntawd, yog tias lub plawv nws tus kheej tsis tau txais cov ntshav uas nws xav tau, nws yuav ua tsis tau nws txoj haujlwm ntawm kev nqus dej kom zoo.
Lub cev ntshav ncig no ua haujlwm li cas?
Tag nrho cov txheej txheem no tshwm sim nrog lub plawv, lub ntsws, thiab cov hlab ntsha ua haujlwm ua ke. Cia peb saib seb qhov no tshwm sim li cas ib kauj ruam zuj zus.
1. Ua ntej, lub plawv sab xis ntawm koj lub plawv xa cov ntshav uas tsis muaj oxygen mus rau koj lub ntsws. Cov ntshav no mus dhau ntawm cov hlab ntsha tseem ceeb hauv lub ntsws, hu ua Pulmonary Artery.
2. Hauv lub ntsws, cov pa roj carbon dioxide hauv cov ntshav no raug tso tawm thiab hloov nrog cov pa oxygen los ntawm huab cua uas peb ua pa.
3. Cov ntshav no, uas tam sim no puv nrog oxygen, rov qab mus rau sab laug atrium ntawm lub plawv los ntawm cov hlab ntsha hauv lub ntsws.
4. Los ntawm sab laug atrium, cov ntshav uas muaj oxygen ntau no raug xa mus rau sab laug ventricle, uas yog qhov tseem ceeb thiab muaj zog tshaj plaws ntawm lub plawv.
5. Lub plawv sab laug qaug zog heev thiab thawb cov ntshav uas muaj oxygen ntau no mus rau hauv cov hlab ntsha kom faib nws mus thoob plaws lub cev.
6. Ua li no, cov ntshav uas ncig thoob plaws lub cev muab cov pa oxygen thiab cov as-ham rau cov kab mob thiab cov nqaij, thiab sau cov khoom pov tseg rau ntawd.
7. Cov ntshav no (cov ntshav uas tsis muaj pa oxygen) uas tau khaws cov khoom pov tseg thiab cov pa roj carbon dioxide rov qab mus rau lub plawv los ntawm cov leeg ntshav.
8. Lub plawv tso cov ntshav no rov qab mus rau hauv lub ntsws kom puv nrog cov pa oxygen. Thaum peb ua pa tawm, cov pa roj carbon dioxide no raug tso tawm.
Lub voj voog no yog qhov uas tshwm sim tas li. Cov txheej txheem ntawm cov ntshav mus rau lub ntsws thiab khaws cov pa oxygen thiab rov qab mus rau lub plawv hu ua pulmonary circulation . Ib yam li ntawd, cov txheej txheem ntawm kev nqa cov ntshav oxygenated los ntawm lub plawv mus rau lwm qhov ntawm lub cev hu ua systemic circulation .
Cov feem tseem ceeb ntawm lub cev ncig ntshav yog dab tsi?
Raws li peb tau hais ua ntej lawm, muaj plaub qhov tseem ceeb rau lub kaw lus no. Txhua qhov ntawm lawv muaj nws txoj haujlwm tshwj xeeb. Yuav kom nkag siab qhov no yooj yim dua, cia peb saib daim ntawv teev lus no.
| Ib feem | Kev Ua Haujlwm & Kev Piav Qhia |
|---|---|
| Lub plawv | Qhov no yog lub twj tso kua mis tseem ceeb ntawm lub cev. Lub cev nqaij no yog qhov uas tso cov ntshav mus thoob plaws lub cev. Nws yog tib lub cev hauv lub cev ncig ntshav. (Lub ntsws yog lub cev ua pa.) |
| Cov hlab ntsha | Cov no yog cov leeg ntshav uas nqa cov ntshav uas muaj pa oxygen los ntawm lub plawv mus rau lwm qhov ntawm lub cev. Cov hlab ntsha loj tshaj plaws hauv peb lub cev yog aorta . Cov no maj mam faib ua cov ceg me me, uas peb hu ua arterioles . |
| Cov leeg ntshav | Cov leeg ntshav no nqa cov ntshav uas tsis muaj oxygen thiab pov tseg rov qab mus rau lub plawv los ntawm txhua qhov chaw ntawm lub cev. Lawv pib ua cov me me (venules) thiab loj dua thaum lawv mus ze rau lub plawv. Cov leeg ntshav hauv ob txhais ceg txawm muaj cov qhov dej uas tiv thaiv cov ntshav kom tsis txhob ntws rov qab. |
| Cov hlab ntsha capillaries | Cov no yog cov hlab ntsha me tshaj plaws hauv peb lub cev. Lawv txuas cov hlab ntsha me me (Arterioles) thiab cov leeg ntshav (Venules) . Vim tias lawv cov phab ntsa nyias heev, cov pa oxygen, carbon dioxide, cov as-ham, thiab cov khoom pov tseg tuaj yeem nkag mus thiab tawm hauv cov cell tau yooj yim. |
Cov kab mob dab tsi feem ntau cuam tshuam rau lub cev no?
Muaj ntau yam teeb meem hauv peb lub cev cov ntshav ncig yog vim muaj kev thaiv lossis kev ua haujlwm tsis zoo ntawm cov hlab ntsha. Cov hlab ntsha yog cov uas muab pa oxygen rau tag nrho lub cev, yog li ntawd yog tias muaj kev thaiv qhov twg, qhov kev muab pa oxygen ntawd yuav raug cuam tshuam.
Hauv qab no yog qee yam mob uas feem ntau cuam tshuam rau lub kaw lus no.
- Ntshav Siab : Muaj kev siab ntau ntxiv rau ntawm phab ntsa ntawm cov hlab ntsha thaum cov ntshav txav mus los ntawm lawv.
- Cov roj cholesterol ntau: Cov rog ntau hauv cov ntshav tuaj yeem tso rau hauv cov hlab ntsha thiab thaiv lawv.
- Kev ua tsis taus ntawm lub plawv dhia (Arrhythmia):Lub plawv dhia tsis sib xws lossis lub suab nrov.
- Mob plawv nres: Kev puas tsuaj rau cov leeg nqaij plawv vim yog kev thaiv ntawm cov hlab ntsha uas xa ntshav mus rau lub plawv.
- Teeb meem ntawm lub plawv valve: Lub plawv valve tsis ua haujlwm zoo.
- Lub plawv tsis ua haujlwm: Cov leeg nqaij plawv tsis muaj zog thiab tsis tuaj yeem tso ntshav txaus rau lub cev.
- Aneurysm: Kev qaug zog ntawm phab ntsa ntawm cov hlab ntsha, ua rau nws o zoo li lub pob. Qhov no feem ntau tshwm sim hauv lub hlwb lossis aorta.
- Mob Stroke: Kev txhaws lossis tawg ntawm cov hlab ntsha uas xa ntshav mus rau lub hlwb.
- Atherosclerosis: Kev nqaim ntawm cov hlab ntsha vim yog kev tso cov roj cholesterol thiab lwm yam tshuaj rau hauv phab ntsa ntawm cov hlab ntsha.
- Cov kab mob ntawm cov hlab ntsha: Cov kab mob xws li cov hlab ntsha tob tob thrombosis.
Peb yuav ua li cas kom peb lub cev ntshav ncig zoo?
Muaj ntau yam uas koj ua tau los pab kom koj lub plawv thiab cov hlab ntsha noj qab nyob zoo. Cov no yog cov yam yooj yim uas koj ntxiv tau rau hauv koj txoj kev ua neej.
- Ua si nawv tsis tu ncua. Sim ua kom tau tsawg kawg 150 feeb ntawm kev tawm dag zog hauv ib lub lim tiam. Kev taug kev sai sai, khiav, lossis caij tsheb kauj vab yog cov kev xaiv zoo.
- Pw tsaug zog zoo. Nws yog ib qho tseem ceeb heev uas yuav tsum tau pw tsaug zog txaus txhua hmo.
- Tswj cov ntshav siab. Yog tias koj muaj ntshav siab, ua raws li koj tus kws kho mob cov lus qhia thiab cov tshuaj raws nraim.
- Tswj koj cov roj cholesterol. Txo koj cov zaub mov uas muaj roj thiab rog ntau kom tswj tau koj cov roj cholesterol.
- Tsis txhob haus luam yeeb kiag li. Kev haus luam yeeb ua rau lub plawv thiab cov hlab ntsha puas tsuaj heev.
- Noj zaub mov kom zoo rau lub plawv. Noj ntau cov fiber, zaub, thiab txiv hmab txiv ntoo. Txo cov khoom noj uas muaj roj ntau.
- Tswj koj qhov hnyav kom noj qab nyob zoo. Kev tswj koj qhov hnyav kom noj qab nyob zoo rau koj qhov siab yog qhov tseem ceeb heev.
- Tswj koj cov ntshav qab zib. Yog tias koj muaj ntshav qab zib, tswj nws kom zoo.
- Txo kev ntxhov siab. Tej yam xws li kev xav, kev ua yoga, thiab kev ua si lom zem yuav pab txo kev ntxhov siab.
Yog xav paub ntxiv txog qhov no, thiab xav tham txog qhov zoo tshaj plaws rau koj , mus ntsib koj tus kws kho mob . Nws yuav muaj peev xwm coj koj zoo dua.
Ob lo lus nug uas nug ntau zaus
Puas muaj ob hom ntshav, ntshav liab thiab ntshav xiav?
Tsis yog. Txhua tee ntshav hauv peb lub cev yog xim liab.. Ntshav tau nws cov xim liab los ntawm cov protein hu ua hemoglobin hauv cov qe ntshav liab. Tab sis cov ntshav uas muaj oxygen yog xim liab tob, thaum cov ntshav uas tsis muaj oxygen yog xim liab dawb thiab sib dua. Cov leeg ntshav hauv qab peb daim tawv nqaij zoo li xiav vim yog txoj kev uas lub teeb mus los ntawm cov txheej ntawm daim tawv nqaij. Tab sis sab hauv cov leeg ntshav ntawd yog cov ntshav liab.
Cov hlab ntsha puas ib txwm nqa cov ntshav uas muaj oxygen?
Feem ntau, yog. Tab sis muaj ib qho tshwj xeeb tshwj xeeb. Qhov ntawd yog Pulmonary Artery . Nws nqa cov ntshav uas tsis muaj oxygen los ntawm lub plawv mus rau lub ntsws. Ib yam li ntawd, Pulmonary Vein nqa cov ntshav uas muaj oxygen los ntawm lub ntsws mus rau lub plawv. Qhov no yog ib qho tshwj xeeb uas cov txheej txheem mus rau lwm txoj kev.
Cov Lus Qhia Txog Kev Coj Mus Tsev
- Koj lub plawv thiab cov hlab ntsha yog ib lub cev tseem ceeb uas ua rau koj muaj sia nyob thiab ua haujlwm tas li.
- Lub cev no yog qhov muab txhua lub cell hauv koj lub cev nrog cov pa oxygen thiab cov as-ham uas nws xav tau.
- Kev ua neej noj qab haus huv (kev noj zaub mov zoo, kev tawm dag zog, thiab kev zam kev haus luam yeeb) yog qhov tseem ceeb heev los tiv thaiv lub cev no.
- Yog tias koj muaj teeb meem xws li ntshav siab lossis roj cholesterol, nws yog ib qho tseem ceeb uas yuav tsum nrhiav kev kho mob kom zoo los ntawm kws kho mob .
- Kev saib xyuas koj lub siab txhais tau tias kev saib xyuas tag nrho koj lub cev.
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Tsis muaj lus teb tau muab tso tawm. Ntxiv koj cov lus tawm ntawm no thawj zaug.
Ntxiv koj cov lus