Ukuqonda indlela iiplavines zentliziyo zisebenza ngayo
Kukho ezine iinjenge zentliziyo entliziyweni yomntu. Iiplavines zinceda ukugcina ukuhamba kwegazi ngokufanelekileyo entliziyweni , ukugcina igazi lihamba kakuhle nangokufanelekileyo, kwaye kwindlela efanelekileyo. Ukongezelela kwiiplavishini kukho ezine amagumbi ezinhliziyo - amagumbi aphezulu abizwa ngokuba yi-atrium ekhohlo kunye neyekunene, amagumbi angaphantsi yi-ventricle yekhohlo.
I-valve yenhliziyo ephilileyo iya kumisa igazi ekuphumeni kwekamelo lentliziyo de kube lixesha lokuba intliziyo iphephe igazi kwindawo yalo ezayo. Iiplavines zivule kwaye zivale ngokuchaneka ngexesha, ukuvumela intliziyo ukupompa igazi ngokufanelekileyo.
Ivalve engasebenzi kakuhle iya kubangela ukuba intliziyo isebenze nzima kunokuba kufanele, njengoko igazi lizama ukuhamba ngendlela engafanelekanga okanye kuba nzima kwintliziyo ukuphuhlisa uxinzelelo lwegazi olufanelekileyo. Igazi linokuthi "livuza" ngesigufi esinesifo esingasebenzi kakuhle.
I-Tricuspid Heart Valve
I-valve ye-tricuspid i-valve yokuqala yokuba igazi ligeleza entliziyweni. Ngomnye weevrivesti ezimbini ze-atrioventricular, ithetha ukuba itholakala phakathi kwe-atrium kunye ne-ventricle, kulo mzekelo, kwicala lasekunene lentliziyo. Yenziwe ngamagqabha amathathu, okanye amapheshana, asebenza kunye ukuyeka nokuqala ukuhamba kwegazi.
Amaqabunga afakwe kwiimisipha ezincinci, ezibizwa ngokuba zizihlunu zamaphepha, eziqinisa ukuhamba kwamaphecana.
Ivalve ye-tricuspid ivula xa iikontraki ze-atrium, ezivumela igazi ukuba liqhume kwi-ventricle.
I-valve ye-tricuspid, efana ne-mitral valve, yenye yeendawo eziqhelekileyo ze-valve prolapse nokuphindaphinda, iimeko ezingenza uncedo lwonyango luyimfuneko.
I-Pulmonic Heart Valve
I-valve ye-pulmonic yi-valve yesibini yentliziyo.
Njengevaji ye-aortic, iphinda ibhekiswe njengevilunar valve, ngenxa yobume bayo. Ilala phakathi kwe-ventricle efanelekileyo kunye ne-pulmonary artery, ethatha igazi kwimiphunga. Xa iikontraki ezifanelekileyo ze-ventricle, i-valve ye-tricuspid ivula, ivumela igazi ukuba liphume emiphakeni.
I-Mitral Heart Valve
I-valral valve, okanye i-valve bvuspid, yi-valve yesithathu yentliziyo. Njengevini ye-tricuspid, i-valve ye-atrioventricular, ithetha ukuba ihlala phakathi kwe-atrium yekhohlo kunye ne-ventricle ekhohlo. Igazi le-oxygen lidlula kwi-valve mitral xa iivumelwano ze-atrium, ezivumela igazi ukuba liphume kumgangatho ophezulu ukuya kwi-ventricle ephantsi.
I-mitral valve yenziwe ngamaphetshana amabini, okanye i-flaps, ezithintela igazi ekubeni lingena kwi-ventricle kungekudala. Xa iivumelwano zee-atrium, i-mitral valve ivula, ivumela igazi ukuba lingene kwi-ventricle.
I-mitral valve, njenge-valve ye-tricuspid, iyindawo eqhelekileyo ye-valve prolapse nokuvuselelwa, iimeko ezinokufuna ukungenelela kwezokwelapha.
I-Aortic Heart Valve
I-valve ye-aortic yintsimbi yesine kunye neyokugqibela ye-valve, elele phakathi kwe-ventricle ekhohlo kunye ne-aorta. Ivevve yenziwe ngamaphephancwadi amathathu, isebenzisane kunye nokuyeka igazi ukungena kwi-aorta ngaphambi kwexesha.
I-valve ye-aortic ivula xa iivumelwano ze-ventricle, ukuvumela igazi ukuba lihambe ukusuka entliziyweni kwaye liqale uhambo oluya kuwo wonke umzimba.
Iingxaki ze-Heart Valve
Ngelixa ezinye iiplavines zininzi kunokuba ezinye ziphuhlise izifo ezithile ze-valvular, zonke iipavus ziyakhula iingxaki. Kwezinye iimeko, ingxaki ye-valve ayinayo iimpawu kwaye iya kufunyanwa kuphela ngenxa yentliziyo igungqeleka. Ezinye iingxaki, ezinjenge-regurgitation, zingabonisa ngeempawu ezifana nokuphefumula okufutshane okanye ukuvakalelwa kwintliziyo.
Ukuba ingxaki inokubaluleka, uvavanyo lunokucetyiswa ukuba lunqunyulwe ukuba utyando lwe-valve ukulungiswa okanye ugqirha lokutshintshela i-valve kufuneka liqwalaselwe.
Imithombo:
> Iintliziyo zeValves. I-American Heart Association.