Ukuqonda ukuthi ama valve enhliziyo asebenza kanjani
Kunezinsimbi ezine zenhliziyo enhliziyweni yomuntu enempilo. Ama-valve asiza ukugcina ukugeleza kwegazi okufanelekile enhliziyweni , ukugcina igazi lihamba kahle futhi lihamba kahle, futhi ngendlela efanele. Ngaphezu kwama-valve kunamagumbi amane enhliziyo - amakamelo aphezulu abizwa ngokuthi i-atrium engakwesobunxele nelungile, amakamelo aphansi yi-ventricle engakwesokunxele nesokudla.
I-valve yenhliziyo enempilo izoyeka igazi ekuphumeni kwekamelo lezinhliziyo kuze kube yisikhathi sokuba inhliziyo iqhume igazi endaweni yayo elandelayo. Ama-valves avule futhi avalwe ngokucacile isikhathi, okuvumela inhliziyo ukuba iphepule igazi ngokuphumelelayo.
I-valve engasebenzi kahle izobangela inhliziyo ukuba isebenze kanzima kunalokho okufanele, njengoba igazi lizama ukugeleza ngendlela engafanele noma kuba nzima ngenhliziyo ukuthuthukisa ukwanele kwengcindezi yegazi. Igazi lingabuye "livuza" ngesigufu esiphelele esingasebenzi kahle.
I-Valid Heart Heart Valve
I-valve ye-tricuspid yi-valve yokuqala ukuthi igazi ligeleza phakathi kwenhliziyo. Ngenye yezimpawu ze-atrioventricular, okusho ukuthi itholakala phakathi kwe-atrium ne-ventricle, kulokhu, ngakwesokudla senhliziyo. Yenziwe ngama-flaps amathathu, noma amapheshana, asebenza ndawonye ukuze ayeke futhi aqale ukugeleza kwegazi.
Amapheshana anamathele emisipha emincane, ebizwa ngokuthi imisipha yamapilisi, eqinisa ukuhamba kwamapheshana.
I-valve ye-tricuspid ivula lapho izinkontileka ze-atrium, ivumela igazi ukuba ligijime ngaphakathi kwe-ventricle.
I-valve ye-tricuspid, njenge-valve mitral, ingenye yezingosi ezivamile ze-valve prolapse nokuphindaphinda, izimo ezingenza ukungenelela kwezokwelapha kuyadingeka.
I-Pulmonic Heart Valve
I-valve ye-pulmonic yi-valve yesibili yenhliziyo.
Njenge-valve ye-aortic, ibizwa nangokuthi i-valve ye-semilunar, ngenxa yesimo sayo. Iphakathi kwe-ventricle efanele kanye nomthambo we-pulmonary, okuthatha igazi emaphashini. Lapho izinkontileka ze-ventricle ezilungile, i-valve ye-tricuspid ivula, ivumela igazi ukuba ligijime emaphashini.
I-Mitral Heart Valve
I-valve ye-mitral, noma i-valve i-valve, i-valve yesithathu yenhliziyo. Njengesivinini se-tricuspid, i-valve ye-atrioventricular, okusho ukuthi ihlala phakathi kwe-atrium kwesokunxele ne-ventricle kwesokunxele. I-oxygenated igazi idlula nge-valve mitral lapho isivumelwano se-atrium, evumela igazi ukuba ligele kusuka ekamelweni eliphezulu libe yi-ventricle engezansi.
I-valve ye-mitral iqukethe amaqabunga amabili, noma ama-flaps, avimbela igazi ukuba lingena e-ventricle ngokushesha. Lapho izinkontileka ze-atrium, i-valve ye-mitral ivuleka, ivumela igazi ukuba lingene ngaphakathi kwe-ventricle.
I-valve ye-mitral, njenge-valve ye-tricuspid, isayithi elivamile le-valve prolapse nokuphindaphinda, izimo ezingadinga ukungenelela kwezokwelapha.
I-Aortic Heart Valve
I-valve ye-aortic yi-valve yesine neyokugcina yenhliziyo, elele phakathi kwe-ventricle yesokunxele ne-aorta. I-valve iqukethe amapheshana amathathu, esebenza ndawonye ukuvimbela igazi ukungena e-aorta ngaphambi kwesikhathi.
I-valve ye-aortic ivula lapho izinkontileka ze-ventricle, zivumela igazi ukuba lisuke enhliziyweni futhi liqale uhambo oluya kuwo wonke umzimba.
Izinkinga ze-Heart Valve
Ngenkathi amanye ama-valve angaphezu kwamanye ukuthuthukisa izifo ezithile ze-valvular, zonke izivali zingakha izinkinga. Kwezinye izimo, inkinga ye-valve ngeke ibe nezimpawu futhi izotholakala kuphela ngenxa yenhliziyo ebubula. Ezinye izinkinga, ezifana nokuphindaphinda, zingabonisa ngezimpawu ezifana nokuphefumula noma ukuzwa kwenhliziyo esebenza kanzima.
Uma inkinga ingase ibe yingozi, ukuhlolwa kunganconywa ukuze kunqunywe ukuthi ukuhlinzekwa ukulungiswa kwe- valve noma ukuhlinzwa okumele kutholakale ku- valve kufanele kucatshangelwe.
Imithombo:
> I-Valves yenhliziyo. I-American Heart Association.