Ngaba wakha wazibuza ukuba igazi lihamba njani emzimbeni wakho kwaye ligcina njani uxinzelelo lwegazi luhlala luhleli? Sinohlobo lomthambo wegazi emzimbeni wethu omncinci kangangokuba awubonakali ngamehlo enyama, kodwa unamandla kakhulu. Namhlanje sithetha ngala maqhawe amancinci, iiArterioles.
Ngamafutshane, zithini ezi arterioles?
Ii-arterioles zincinci kakhulu, zincinci kakhulu. Zifana namasebe aphuma kwimithambo yegazi ephambili emzimbeni wethu, imithambo yegazi. Zicinge njengeendlela ezincinci ezisecaleni eziphuma kwindlela enkulu nezikhokelela ezindlwini. Ezi arterioles zezona zithwala igazi lisuka entliziyweni ukuya kwizicubu kunye namalungu omzimba wethu.
Ezi arterioles zidibana nemithambo yegazi emincinci. Sizibiza ngokuba zii-capillaries. Ii-capillaries zimithambo yegazi emincinci kakhulu, njengemisonto yewebhu yesigcawu. Kulapho izinto ezibalulekileyo zenzeka khona. Zifana neziko lokutshintshiselana. Igazi linika ioksijini kunye nezondlo kwizicubu, kwaye izicubu zithatha imveliso engcolileyo efana ne-carbon dioxide ziyibuyisele egazini. Emva kolu tshintshiselwano, imithambo emincinci (ii-venule) idibana nezi capillaries ukuze ithwale igazi eligcwele inkunkuma libuyele entliziyweni.
Ngoko ke, ii-arterioles zikhonkco elibaluleke kakhulu phakathi kwemithambo yegazi kunye nee-capillaries.
Yintoni umsebenzi oyintloko wezi arterioles zincinci?
Nangona ezi zincinci ngobukhulu, zidlala indima ebalulekileyo ekulawuleni ukuhamba kwegazi kunye noxinzelelo lwegazi emzimbeni wethu.
- Uxinzelelo lwegazi kunye nolawulo lokuhamba kwegazi: I-80% yokumelana nokuhamba kwegazi emzimbeni wethu ilawulwa zezi arterioles. Ngamafutshane, le mithambo yegazi mincinci imisela ukuba igazi lihamba ngokukhawuleza kangakanani, liqine kangakanani, kwaye lingakanani igazi elimpontshelwa kwilungu ngalinye. Oku kwenziwa ngokufinyeza nokukhulula izihlunu ezikwiindonga zazo. Kufana nokucinezela umbhobho wamanzi ukulawula ukuhamba kwamanzi. Le yindlela uxinzelelo lwegazi lwethu olugcinwa ngayo kwinqanaba elizinzileyo.
- Ukunceda ngokutshintshiselana: Njengoko bekutshiwo ngaphambili, imithambo yegazi isebenza "njengomlamli" phakathi kwemithambo yegazi emikhulu kunye nemithambo yegazi emincinci, isebenza njengebhulorho yokutshintshiselana ngeoksijini, izondlo kunye nemveliso engcolileyo.
Ii-arterioles zinceda njani amanye amalungu omzimba?
Ii-arterioles zifumaneka kuyo yonke imizimba yethu, zinceda phantse kuzo zonke izitho zomzimba. Nantsi eminye imizekelo.
| I-organ | Indlela iiArterioles ezinceda ngayo |
|---|---|
| Ulusu | Xa siziva sibanda, le mithambo yegazi iyaxinanisa ize igcine igazi lingaphakathi emzimbeni. Oku kuyawufudumeza umzimba. Xa siziva sishushu, iyavuleka ize ithumele igazi elingakumbi eluswini, ikhuphe ubushushu emzimbeni. |
| Izintso | Kukho iintlobo ezimbini zee-arterioles ezizisa igazi kwaye zilithathe kwizintso, i-glomerulus. Ezi ziyanda kwaye zinciphe, zilawula isantya igazi elihluzwa ngaso zizintso. |
| Imiphunga | Ezi arterioles ziyancipha ukuze zinciphise ukuhamba kwegazi kwiindawo zemiphunga ezineoksijini ephantsi kwaye zithumele igazi kwiindawo ezineoksijini ephezulu. Oku kunceda ukwandisa ubungakanani beoksijini efunxwa egazini. |
| Ingqondo | Xa ingqondo ifuna igazi elingakumbi, ii-arterioles ziyanda, zivumela igazi elingakumbi ukuba lihambe. |
Ziziphi izifo ezichaphazela ii-arterioles?
Ekubeni ii-arterioles zikwayimithambo yegazi, nasiphi na isifo esichaphazela intliziyo kunye nenkqubo yokujikeleza kwegazi sinokuzichaphazela nazo.
| Imeko yezonyango | Ingcaciso elula |
|---|---|
| Uxinzelelo lwegazi oluphezulu (uxinzelelo lwegazi oluphezulu) | Uxinzelelo lwegazi oluphezulu ixesha elide. |
| Ukutshaya | Iikhemikhali ezikumsi zonakalisa imithambo yegazi. |
| I-cholesterol ephezulu | Ukufakwa kwamafutha ngaphakathi kwemithambo yegazi. |
| I-atherosclerosis | Iindonga zemithambo yegazi ziyaqina kwaye ziqine. |
| I-Vasculitis | Ukudumba/ukudumba kweendonga zemithambo yegazi. |
| Ihlwili legazi (iThrombosis) | Amahlwili egazi ngaphakathi kwemithambo yegazi. |
| Isifo seswekile | Amanqanaba aphezulu eswekile anokonakalisa imithambo yegazi emincinci. |
Ezi meko zonakalisa udonga lwee-arterioles, zize zingakwazi ukufinyela okanye ukuvuleka kakuhle. Oku kuchaphazela uxinzelelo lwegazi kunye nokuhamba kwegazi.
Uyazi njani ukuba kukho ingxaki? - Iimpawu
Iimpawu zezifo ezichaphazela ii-arterioles ziyahluka ngokuxhomekeke kwisifo. Nazi ezinye zemizekelo eqhelekileyo.
| Imeko | Iimpawu ezibonakalayo |
|---|---|
| I-Vasculitis (ukudumba kwemithambo yegazi) | Ukunciphisa umzimba, umkhuhlane, ukudinwa, ukurhawuzelelwa lusu kunye nokukrweleka. |
| Amahlwili egazi | Ukuba kusezimpumlweni, kunzima ukuphefumla, ukuba kusentliziyweni, ziintlungu zesifuba, ukuba kusebuchotsheni, kunzima ukuthetha, ukuba kusemilenzeni, kudumba emilenzeni. |
| I-COPD (isifo semiphunga) | Ubunzima bokuphefumla, ukuphefumla kancinci, ukukhohlela rhoqo. |
Unyango kunye neendlela zokuhlala usempilweni
Ugqirha wakho uza kunika unyango kunye neengcebiso zokugcina yonke inkqubo yakho yentliziyo, kuquka ne-arterioles, isempilweni.
| Unyango lwezonyango | Izinto onokuzenza ngokwakho (Utshintsho kwindlela yokuphila) |
|---|---|
| Amayeza okulwa noxinzelelo lwegazi. | Ukunciphisa ityuwa ekutyeni. |
| Amayeza okwehlisa i-cholesterol. | Ukunciphisa ukutya okunamafutha amaninzi (iioyile, ukutya okuqhotsiweyo, inyama enamafutha). |
| Amayeza okulwa nokuvuvukala kwiimeko ezifana ne-vasculitis. | Ukuzilolonga rhoqo. |
| Ingcebiso yokuyeka ukutshaya. | Ukuphepha ngokupheleleyo iimveliso zecuba. |
| Ukugcina ubunzima obusempilweni obukufaneleyo. |
Sisenokungacingi kakhulu ngezi arterioles zincinci, zisebenza nzima kubomi bethu bemihla ngemihla, kodwa zibalulekile ekulawuleni ukuhamba kwegazi kunye noxinzelelo lwegazi. Ukutya okunempilo kunye nokuzilolonga rhoqo kunokunceda ukugcina yonke inkqubo yakho yentliziyo ikwimo entle. Ekubeni ezinye zezi zifo zingabonakalisi zimpawu kwizigaba zokuqala, kubalulekile ukubona ugqirha wakho ukuze ahlolwe rhoqo . Ngale ndlela, unokufumana ingxaki encinci ngaphambi kokuba ibe nkulu.
Umyalezo Wokuya Ekhaya
- Ii-Arterioles luhlobo lomthambo wegazi omncinci kakhulu kodwa onamandla kakhulu olawula uxinzelelo lwegazi kunye nokuhamba kwegazi emizimbeni yethu.
- Imikhwa yokuphila efana nokutya okutyayo, ukuzilolonga, kunye nokuphepha ukutshaya inefuthe elikhulu kwimpilo yale mithambo yegazi mincinci.
- Ekubeni ezinye izifo zingabonisi zimpawu kwasekuqaleni, kubaluleke kakhulu ukuba uhlolwe rhoqo ngugqirha.
- Ukuba uneengxaki okanye amathandabuzo malunga nempilo yakho, ungaze ungathandabuzi ukuthetha nogqirha wakho ngayo.
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