Ukubonelela umzimba ngegazi, oksijini, kunye nezondlo
Imirhubhe imilambo yegazi ethwala igazi kude nentliziyo kuwo wonke umzimba. Zifakwe njengama-tubes kunye negatsha kwi- arterioles ukufikelela kwizitho kunye nezicubu. Iziphambano zokupompoza zeentliziyo zixhaphaza igazi ngeemitha.
Iimitha zeeMitha kwiShedicic Circle
Umthamo omkhulu we-systemic circulation yi-aorta. Iqhotyoshelwe kwi-ventricle yekhohlo yentliziyo kwaye ithwala igazi elenziwe nge-oxygen.
Amasebe e-aorta abe yimithambo yegazi eya kwiindawo ezahlukeneyo kunye nendawo yomzimba. Unokuziva ujikeleze umthambo onjenge-artificial carotid entanyeni okanye i-radial artery kwisikristsi.
Umthambo we-pulmonary uhlukile kwabanye kuba uqhotyoshelwe kwi-ventricle yeyona ntliziyo kwaye ithwala igazi elingenayo i-oxygen emiphakeni. Kulapho, i-arterioles kunye nama-capillari ukuze igazi lingathatha i-oksijini ngaphambi kokubuyela entliziyweni nge-pulmonary vein. Igazi le-oksijeni lingena kwi-atrium engasekhohlo kwaye iphoswe kwi-ventricle yangasese naphuma nge-aorta.
Ulwakhiwo lweeArridi
Iimitha ze-Arriyo ziqulethe ipesenti ephakamileyo yoluhlobo oluthile lwesisipha, olubizwa ngokuba yimisipha epholileyo , engalawulwa ngama-hormone kunye nemiqondiso ekhethekileyo esuka kwinkqubo yeentlanzi. Uluhlu lwangaphandle lomthamo luyenziwe ngeefowuni ze-collagen. Uluhlu oluphakathi luba ne-static muscle kunye ne-elastic fibers. Uluhlu lwangaphakathi lugumbi oluthiwa yi-endothelium.
Igazi lihamba phakathi kwendawo ephakathi. Ukuba lesi sikhungo esingenalutho sinqandekile ngenxa yokuphuhliswa kwe-muscle okanye ukwakheka kwamacwecwe, kunokunyusa uxinzelelo lwegazi. I-Plaque yenza kwakhona iirriyiti ziguquguquke. Ukuba i-artery iphuka okanye ivaliwe, njengokuba isifo sesifo okanye isifo senhliziyo, izicubu eziqhelekileyo ziyazinika ziya kufa.
Iindonga eziqinileyo, ezinamandla zeetriyiti zenza bakwazi ukuxhathisa iingcinezelo eziphezulu ezikhoyo kufuphi nentliziyo. Zonke izitho ezisemzimbeni zineentlobo ezikhethekileyo zemithambo ehlelwe ngokukhethekileyo ukuhambisa izinto ezifunekayo.
Intliziyo yesisu ihlinzekwa yimibhobho ye-coronary . Umzobo we-coronary wekhohlo kunye ne-right coronary yerenithi esecaleni kwe-aorta kunye neyeriyali yecala yangasese iyahlukana ngakumbi kwi-circumflex artery kunye ne-left-edge yangaphakathi. Le mibhobho emine yiyo leyo inokuthi ithatyathwe endaweni yecyardary bypass graft (CABG). I-quadruple bypass ithatha yonke imithambo emine.
ZeMpilo
Ukuxhatshazwa kwemibhobho yixesha eliqhelekileyo le-atherosclerosis kunye nesifo se-peripheral disease (PAD). Oku kwenzeka xa iifomque zenziwe kwi-fat, i-cholesterol, i-calcium, iprotheni, kunye neeseli ezivuthayo, ukunciphisa okanye ukuvimbela imirhoxo. Xa oku kwenzeka kwimibhobho yentliziyo, isifo se-coronary disease (CAD).
Imiba yengozi ye-PAD ibandakanya ukutshaya, isifo sikashukela, uxinzelelo lwegazi oluphezulu kunye ne-cholesterol ephezulu. I-PAD inokukhokelela ekuhlaselweni kwentliziyo, ukubetha, ukuhlaselwa kwe-ischemic, ukuguqulwa kwesifo somgubo, kunye nokuchithwa.
> Imithombo
> Inhliziyo negazi Iinqwelo: Iimpawu ze-Coronary Arteries. Kliniki yaseCleveland.
> Indlela Yokwenziwa Kwegazi Isebenza Njani? ILayibrari yeSizwe ka-US yamayeza.
> Iipherithi zeArteri Disease (PAD). Kliniki yaseCleveland.