Umfutho wegazi

Umfutho wegazi - umfutho imithambo yegazi. Ngaphandle-ke, akunakwenzeka ukuba uqedele ukufaka ekusebenzeni le izinqubo umzimba kwezicubu zomzimba. Siyabonga kuye, igazi eshayela phakathi kwezinye isimiso sokujikeleza kwegazi.

Umfutho wegazi kudalwa ngaphakathi Umthambo, capillary, ngokulandelana - e-capillary pooling eyeqile - lihambe ngemithambo.

Ngaphezu kwalokho, kukhona ukucindezela osmotic negazi, incike lokuhlushwa nosawoti wamaminerali. Inani layo uqobo uhlala esitebeleni. Kodwa ngisho noshintsho sakugcina ongabhubhisa amangqamuzana abomvu egazi. Ukuze isiqondiso neurohumoral of ingcindezi osmotic wemfanelo umjuluko nezindlala nezinso.

Eqinisweni, inkulu kangakanani ngeke le lwemithambo blood pressure, kuthinta:

- amandla Kufinyeta wenhliziyo;

- inani legazi ukhiphe kubo ngesikhathi lapho ukuncishiswa ngayinye elandelayo;

- ukumelana lapho izindonga isitsha (neuropathy) nokunikeza ezihambayo ukugeleza kwegazi;

- inani zisaphila per unit isikhathi yokutholwa.

izici Secondary ezinomthelela blood pressure - kuba inombolo bese viscosity. Futhi, umehluko ingcindezi kule komgodi ongaphakathi kwamathumbu futhi ingaphakathi thoracic, okuyinto kuphakama ngenxa ukunyakaza phakathi kwezimila.

Umkhawulo blood pressure kwenzeka uma sehliselwe ventricle engakwesobunxele (systole). Ngakho-ke uyakhishwa therefrom ngesikhathi esifanayo mayelana 70 ml igazi. Ngokusebenzisa ama-capillary nezinye izitsha ezincane mali ngesikhathi esisodwa awukwazi ukuthola ngokusebenzisa. I-aorta, ngenxa umswakama waso, welula, kanyekanye kuphakamisa futhi systolic blood pressure. Kubantu (enempilo) ineminyaka engaphezu 16, kungaba isukela 110 kuya 130 mm HG. Art.

Phakathi diastole - ikhefu phakathi Kufinyeta kwesokunxele ventricles kwesokudla - odongeni welulela kwemithambo yegazi esikhulu elikuyi-aorta baqala shwabanisa. Kanjeyana they bafakwa capillary igazi. Futhi umfutho sehla ekupheleni diastole ku-aorta lehliselwa ku-90 mm HG. Art nokuvaleka kwemithambo wosayizi omkhulu -. 70 mm HG. Art. Umehluko phakathi systole futhi diastole ibonwa umuntu ngesimo ishayela.

Kukhula ibanga kusuka imithambo yegazi ukuze inhliziyo, ephansi ingcindezi kulo. Okokuqala, inani eliphezulu kubonisa ingcindezi systolic kanti eyesibili, ephansi - I-diastolic.

Ngo imithambo enkulu ephakeme e arteriole ezincane. Ngo kwathatha capillary embhedeni blood pressure liyancipha, ngaphezulu iwela vein futhi sifinyelela ngisho nakulesi sikhathi amagugu ongathandeki emithanjeni eziyize.

Kala-ke ngokomthetho akulula kakhulu ngemithambo noma ama-capillary. Ngakho-ke, inani ingcindezi wahlulelwa ngesisekelo ukuzimisela yayo imithambo.

Ukusebenza ngokujwayelekile yayo kuxhomeke endleleni umuntu ophila, lokho akwenzayo, okuyinto has izici ngamunye. Njengoba bekhula, inani ingcindezi ushintsho. Futhi kwandisa ne zicindezeleke ngokomzwelo, umsebenzi ngokomzimba. Ngesikhathi esifanayo, abadlali, abantu njalo isebenza kanzima emzimbeni futhi kungase wehlise ngisho.

Systolic blood pressure ezinganeni kunqunywa ifomula 80 + 2a, okuyinto kanye - lena engu (eminyakeni).

Izinqubo ezikhona emzimbeni futhi ulawule izinga lokucindezeleka, uyivumele ukubuyela esimweni esivamile ngemva iyehla iyenyuka ezincane ngenxa yokucindezeleka okungokomzwelo noma okhandlayo.

Uma abaphukile, kukhona ushintsho ziphikelele phezulu yayo, bese ucoca ngaloko nomfutho wegazi ophezulu, noma phansi, ke kuziwa hypotension.

Ngokuvamile, noma yimuphi umuntu uyazi igazi labo ingcindezi kokuvamile. Futhi yimuphi ukuphambuka e noma isiqondiso kufanele abe nobuqili uya kudokotela ngenxa yezizathu ezibangela lokhu isethi inkomba. Ngokwesibonelo, e yezifo ezithathelwanayo, inhliziyo, uma kwenzeka ubuthi ngokuvamile kwenzeka hypotension. Futhi izinso izifo, endocrine thuthuva - nomfutho wegazi ophezulu.