Ake siqonde kahle ukuthi igazi ligeleza kanjani emizimbeni yethu? (Uhlelo Lokujikeleza Kwegazi)

Sawubona! Unjani? Namuhla sizokhuluma ngohlelo olumangalisayo nolubalulekile emzimbeni wethu. Lona uhlelo lwethu lokujikeleza kwegazi, noma njengoba abanye belubiza kanjalo, "Uhlelo Lokujikeleza Kwegazi". Ngezinye izikhathi kungenzeka ukuthi uke wezwa lubizwa ngokuthi "Uhlelo Lwenhliziyo". Womabili lawa amagama ohlelo olufanayo. Ngakho-ke, ake sibone ukuthi luyini, lusebenza kanjani, nokuthi lugcinwa kanjani luphilile.

Iyini isimiso sokujikeleza kwegazi? Kalula nje...

Kalula nje, uhlelo lokujikeleza kwegazi lomzimba wakho lwakhiwe yinhliziyo nemithambo yegazi . Lokhu kokubili kusebenzisa igazi ukuthwala izakhamzimba kuwo wonke amaseli emzimbeni wethu nokususa imfucuza kulawo maseli.

Cabanga ngenhliziyo yakho njengephampu yamanzi. Le phampu ipompa igazi ngenethiwekhi eyinkimbinkimbi yemithambo yegazi emzimbeni wakho wonke. Le mithambo yegazi ibizwa ngokuthi imithambo yegazi nemithambo yegazi . Leli gazi lithwala umoya-mpilo – igesi enikeza ukuphila esiyiphefumulayo – kanye nezakhamzimba eziya emisipheni yakho, ezicutshini nasezithweni zomzimba. Futhi yisimiso esifanayo esiqoqa imfucuza bese siyithwala siyiyise ezithweni zomzimba lapho ingasuswa khona.

Yimiphi imisebenzi eyinhloko yalolu hlelo?

Uhlelo lwethu lokujikeleza kwegazi lwenza imisebenzi emithathu eyinhloko:

1. Ukuthwala igazi emzimbeni wonke.

2. Ukuthwala umoya-mpilo kanye nezakhamzimba ezithweni zethu zomzimba, emisipheni nasezicutshini.

3. I-carbon dioxide – igesi engasasebenzi emizimbeni yethu futhi ekhishwa lapho sikhipha umoya – iwukususwa kwemikhiqizo kadoti kanye nemikhiqizo kadoti yamakhemikhali ezithweni zethu.

Imini nobusuku, ngisho noma ulele, inhliziyo yakho ilokhu ipompa igazi emzimbeni wakho wonke, njengokungathi lihamba ngesiyingi. Uma silandela le ndlela yegazi, iqala enhliziyweni futhi ihambe ngemithambo yegazi emikhulu ebizwa ngokuthi ``imithambo yegazi'' ukuze isakaze igazi ezithweni nasezicutshini zethu.

Ngaphakathi kwezicubu zethu, kunethiwekhi yemithambo yegazi emincane kakhulu ebizwa ngokuthi ama-capillary , umoya-mpilo osegazini uyakhishwa bese imfucuza ibuyiselwa egazini. Ngemva kokushiya lezi zicubu nezitho zomzimba, leli gazi libuyela enhliziyweni ngemithambo yegazi ebizwa ngokuthi imithambo. Leli gazi libe selihamba enhliziyweni liye emaphashini, lapho liphinde lifakwe khona umoya-mpilo, bese kuqala uhambo. Lokhu kwenzeka izikhathi eziyizinkulungwane ngosuku, njalo ngomzuzwana inhliziyo yakho ishaya ngawo.

Ungacabanga nje, inhliziyo yakho ipompa cishe amalitha angu-2,000 (ngaphezu kwamalitha angu-7,500) egazi emzimbeni wakho nsuku zonke! Ngezikhathi ezinjengalezi, uma uzivocavoca, inhliziyo yakho ipompa igazi eliningi nakakhulu. Lokhu kusho ukuthi uhlelo lwethu lokujikeleza kwegazi luvumelana nenani legazi nomoya-mpilo umzimba wethu owudingayo.

Omunye wemisebenzi eyinhloko yesimiso sethu sokujikeleza kwegazi ukuhlinzeka ngegazi njalo ebuchosheni nasenhliziyweni.Ngoba, uma ubuchopho bungatholi inani elidingekayo legazi, bungalahlekelwa ingqondo ngemizuzwana embalwa. Uma ukugeleza kwegazi kuma imizuzu emine, ubuchopho bungalimala. Ngokufanayo, uma inhliziyo ingatholi igazi elanele, umsebenzi wayo wokupompa uzoqala ukwehluleka ngokushesha.

Ngakho-ke, leli gazi lingena kanjani emzimbeni wonke?

Uhlelo lwethu lokujikeleza kwegazi, noma "Uhlelo Lwenhliziyo Nemithambo yegazi", lusebenza ngosizo lwemithambo yegazi. Eminye imithambo yegazi (''Imithambo Yegazi'') ibuyisela igazi enhliziyweni, kanti eminye imithambo yegazi (''Imithambo Yegazi'') isusa igazi enhliziyweni.

Imithambo yegazi yakho, kanye nenhliziyo namaphaphu akho, kupompa igazi njalo emzimbeni wakho wonke. Nansi indlela esebenza ngayo:

1. Igazi elingenawo umoya-mpilo likhishwa lisuka e-ventricle yesokudla yenhliziyo liye emaphashini. Leli gazi lihamba nge-pulmonary trunk (umthambo omkhulu wamaphaphu).

2. I-oksijini ifakwa kuleli gazi ngaphakathi kwamaphaphu akho.

3. Imithambo yamaphaphu ithwala leli gazi elinomoya-mpilo lisuka emaphashini liye e-atrium yesobunxele yenhliziyo.

4. Kusukela ku-atrium yangakwesobunxele, leli gazi elinomoya-mpilo lithunyelwa ku-ventricle yangakwesobunxele. Le ngxenye yemisipha yenhliziyo ipompa igazi liye kuwo wonke umzimba ngemithambo yegazi.

5. Njengoba igazi lihamba emzimbeni wonke futhi lidlula ezithweni zomzimba, liletha izakhamzimba, lisakaze ama-hormone, futhi liqoqe imfucuza.

6. Ngemuva kwalokho, imithambo yegazi ibuyisela enhliziyweni igazi elingenawo umoya-mpilo, elinothe nge-carbon dioxide. Lisuka enhliziyweni, igazi lithunyelwa emaphashini.

7. Ngaphakathi emaphashini, kukhishwa igesi yekhabhoni dioksijini bese kufakwa umoya-mpilo egazini ngokushintshana. Bese kuthi, uma ukhipha umoya, lowo moya wekhabhoni dioksijini uyakhishwa.

Inqubo yokuthatha umoya-mpilo emaphashini bese ubuyela enhliziyweni ibizwa ngokuthi ukujikeleza kwegazi kwamaphaphu . Inqubo yokuhlinzeka ngegazi elinomoya-mpilo emzimbeni wonke ibizwa ngokuthi ukujikeleza kwegazi okuhlelekile .

Lukuphi lolu hlelo?

Inhliziyo yakho itholakala maphakathi nesifuba sakho. Ixhunywe emithanjeni yegazi ethwala igazi emzimbeni wakho wonke.

Yiziphi izingxenye zesimiso sokujikeleza kwegazi?

Inhliziyo yakho nemithambo yegazi kwakha uhlelo lokujikeleza kwegazi. Ingxenye ngayinye yalezi zitho inomsebenzi othize wokusiza ukuhambisa igazi emzimbeni wakho wonke. Lena yindlela amangqamuzana ethu athola ngayo umoya-mpilo nezakhamzimba kanye nendlela ukungcola okususwa ngayo.

Yiziphi izingxenye ezine eziyinhloko zesimiso sokujikeleza kwegazi?

Izingxenye eziyinhloko zesistimu yokujikeleza kwegazi yilezi:

• Inhliziyo: Lesi isitho esenziwe ngemisipha. Sipompa igazi emzimbeni wonke. Inhliziyo iyona kuphela isitho ohlelweni lokujikeleza kwegazi. Amaphaphu akho angaphansi kohlelo lokuphefumula.
• Imithambo: Lawa amapayipi amancane, anemisipha athwala igazi elinomoya-mpilo lisuka enhliziyweni liye kuzo zonke izingxenye zomzimba. Umthambo omkhulu emzimbeni wethu yi-I-aorta. Imithambo yenhliziyo iyahlukana ne-aorta, bese kuthi njengoba ihamba isuka enhliziyweni, ihlukane ibe yimithambo emincane (ama-arterioles).
• Imithambo: Le mithambo yegazi ithwala igazi elingenawo umoya-mpilo libuyele enhliziyweni. Imithambo iqala emincane (ama-venule) bese iba mikhulu njengoba isondela enhliziyweni. Imithambo emibili eyinhloko (i-vena cava ephezulu kanye ne-vena cava ephansi) ithwala igazi liye enhliziyweni. Imithambo esemilenzeni yakho inama-valve avimba igazi ukuthi ligeleze emuva.
• Ama-Capillary: Le mithambo yegazi ixhumanisa imithambo emincane kakhulu (ama-arterioles) kanye nemithambo (ama-venule). Izindonga zama-capillary zincane kakhulu, zivumela umoya-mpilo, i-carbon dioxide, izakhamzimba, kanye nemikhiqizo engcolile ukuthi idlule isuka egazini iye emangqamuzaneni, futhi isuka emangqamuzaneni iye egazini.

Isimiso sokujikeleza kwegazi sibukeka kanjani? Singakanani?

Ungacabanga ngenhliziyo njengesikhungo somzimba sokupompa igazi. Ixhunywe kunethiwekhi yemithambo yegazi esabalala kuwo wonke umzimba.

Uma uke wabona amapayipi amanzi noma amapayipi okuthutha indle ngaphansi komgwaqo, uyazi ukuthi makhulu. Lawa mapayipi ahlukana abe amancane aletha amanzi emakhaya futhi athwale indle. Ngokufanayo, imithambo yegazi ethwala igazi eya futhi isuka enhliziyweni ifana namapayipi amakhulu ngaphansi komgwaqo. Yimithambo yegazi emikhulu emzimbeni. Njengoba usuka enhliziyweni, lawa ahlukana abe yimithambo yegazi emincane esiza ukusabalalisa umoya-mpilo emzimbeni wonke futhi asuse imfucuza.

Imithambo yegazi yakhiwe ngezingqimba zezicubu ezixhumeneyo, imisipha, kanye nemicu enwebekayo. Imisipha emithanjeni yakho yegazi ilawula ukuthi ingaba nobubanzi obungakanani. Lokhu kuthinta nomfutho wegazi lakho. Lapho imithambo yegazi ikhula, lokhu kubizwa ngokuthi "i-Vasodilation," futhi umfutho wegazi uyehla. Lapho imithambo yegazi imincane, lokhu kubizwa ngokuthi "i-Vasoconstriction," futhi umfutho wegazi uyakhuphuka.

Inhliziyo yakho yenziwe ngemisipha nezinye izicubu. Igazi ligeleza ngamagumbi amane.

Inhliziyo yakho ivame ukuba cishe ngobukhulu besibhakela sakho. Kodwa uma unesifo senhliziyo, ingaba nkulu kakhulu. Imithambo yakho yegazi igijima emzimbeni wakho wonke, kusukela phezulu kuya phansi. Ngakho-ke le nethiwekhi inkulu njengoba nawe umude futhi ubanzi. Eqinisweni, kunemithambo yegazi engaphezu kwamakhilomitha angu-60,000 emizimbeni yethu!

Inhliziyo evamile inesisindo esiphakathi kwama-ounces angu-8 kuya kwangu-12, kodwa lokhu kungahluka kuye ngobulili, isisindo somzimba wonke, kanye nesifo.

Yiziphi izifo nezinkinga ezivamile ezithinta uhlelo lokujikeleza kwegazi?

Izinkinga eziningi ezithinta izingxenye zesimiso sokujikeleza kwegazi zibangelwa ukuhamba kwegazi okuhamba kancane noma okuvinjiwe emithanjeni yegazi. Njengoba imithambo yethu yegazi ihlinzeka nge-oxygen kuwo wonke umzimba, uma noma yimuphi wemithambo yegazi uvinjiwe, kuba nzima ukuletha lowo moya.

Nazi ezinye zezinkinga ezivamile ezithinta uhlelo lokujikeleza kwegazi:

• Umfutho wegazi ophakeme
• I-cholesterol ephezulu
• I-Arrhythmia (isigqi senhliziyo esingajwayelekile)
• Isifo senhliziyo
• Ukungasebenzi kahle kwe-valve yenhliziyo
• Ukwehluleka kwenhliziyo ('Ukwehluleka kwenhliziyo' - ubuthakathaka emisipheni yenhliziyo yakho)
• I-aneurysm ivame ukwenzeka e-aorta noma ebuchosheni.
• Isifo sohlangothi
• I-atherosclerosis - ukunqwabelana kwama-plaque emithanjeni yakho yemithambo
• Isifo senhliziyo
• Izifo zemithambo yegazi ( isibonelo, i-deep vein thrombosis kanye ne-pulmonary embolism)

Izinguquko ezilula zendlela yokuphila kanye namathiphu okugcina uhlelo lwakho lokujikeleza kwegazi luphilile

Kunezinto eziningi ongazenza ukuze ugcine inhliziyo yakho nemithambo yegazi iphilile. Nazi ezimbalwa zazo:

• Zivocavoce njalo. Zibekele okungenani imizuzu eyi-150 ngesonto.
• Ukuthola ubuthongo obudingayo njalo ebusuku.
• Ukulawula umfutho wegazi ophakeme.
• Ukulawula amazinga aphezulu e-cholesterol.
• Ukugwema imikhiqizo kagwayi.
• Ukudla ukudla okunempilo kwenhliziyo. Isibonelo, ukudla okune-fiber eningi kanye namafutha agcwele aphansi.
• Ukugcina isisindo sakho siphilile.
• Ukugcina amazinga kashukela egazini evamile.
• Thola izindlela ezinempilo zokunciphisa ukucindezeleka.

Ingabe indaba yegazi elibomvu negazi eliluhlaza okwesibhakabhaka iyiqiniso? Ingabe imithambo yegazi ihlala ithwala igazi elinomoya-mpilo?

Abanye abantu bacabanga ukuthi igazi eliluhlaza okwesibhakabhaka ligeleza ngemithambo yegazi kwezinye izingxenye zomzimba wethu. Kodwa empeleni, wonke amaconsi egazini lethu abomvu. Igazi lithola umbala walo obomvu kuphrotheni ecebile ngensimbi ebizwa ngokuthi i-hemoglobin . Lokhu kutholakala kumaseli abomvu egazi. Abanye abantu babiza igazi elicebile ngomoya-mpilo ngokuthi “igazi elibomvu.”

Imithambo yakho ithwala igazi elinomoya-mpilo ophansi. Lokhu ngezinye izikhathi kubizwa ngokuthi "igazi eliluhlaza okwesibhakabhaka" ngoba imithambo yakho ingabukeka iluhlaza okwesibhakabhaka ngaphansi kwesikhumba sakho. Kodwa igazi empeleni libomvu. Imithambo iluhlaza okwesibhakabhaka ngenxa yamazinga aphansi omoya-mpilo.

Imithambo yegazi ithwala igazi elinomoya-mpilo kakhulu. Kodwa-ke, kunezindlela ezimbili ezihlukile: umthambo wamaphaphu kanye nomthambo wamaphaphu. Umthambo wamaphaphu uthwala igazi elingenawo umoya-mpilo emaphashini. Umthambo wamaphaphu uthwala igazi elinomoya-mpilo ulibuyisele enhliziyweni.

Ekugcineni, yini okufanele uyikhumbule! (Umyalezo Wokuya Ekhaya)

Uhlelo lwakho lokujikeleza kwegazi luyisimiso esimangalisayo esenza umsebenzi obalulekile wokukugcina uphila, sikunikeza umoya-mpilo nezakhamzimba njalo. Unamandla okugcina inhliziyo yakho nemithambo yegazi yakho kuqinile.Ukuyeka ukubhema, ukudla ukudla okunempilo, ukuvivinya umzimba, nokulawula umfutho wegazi kanye namazinga e-cholesterol konke kuhle ohlelweni lwakho lokujikeleza kwegazi. Buza udokotela wakho ngalokho ongakwenza ukuze uvikele futhi uqinise inhliziyo yakho kanye nemithambo yegazi. Hlala uphilile!

uhlelo lwenhliziyo , uhlelo lokujikeleza kwegazi, imithambo yegazi, imithambo yegazi, imithambo yegazi, ama-capillary, impilo yenhliziyo