Kulandelwe ejikelezayo yabantu: isakhiwo kunye nendima emzimbeni

Igazi - ukwenza i bume lwangaphakathi umzimba womntu inkqubo yezothutho ephambili, njengoko usebenza kuphela zawo, kodwa ke iiseli zamajoni omzimba. Plasma Proteins zadluliselwa zonke izicwili iihomoni, izondlo neoksijini, kwaye zinika isondlo lobushushu homeostasis.

Ngokuphathelele koku zizangqa nokuhamba kwegazi labantu, okanye mandithi, inkqubo esebenza, kuquka intliziyo iimpahla ezinkulu, yegazi ngemithambo odolo eliphakathi kunye amancinane kwakunye emithanjeni ezakha microcirculation. Bonke babe isakhiwo zabo ezizodwa kunye neendlela yommiselo. Ngenxa yamarhamncwa lawo aphezulu intliziyo-zawo ezine, kulisiko ukwahlula phakathi enkulu ejikelezayo encinane womntu. Ukongeza, kananjalo bakwazi ingqondo kunye nentliziyo, ngenxa yokuba ezinye iimpawu ezikhethekileyo. Ngokuba lixesha lokuqala kokufunyanwa imithetho jikelele yale nkqubo wenze uWilliam Harvey kwisiqingatha sokuqala kwenkulungwane ye-17, yaye kamva data ziyahlaziywa nokuchunyiswa ulwazi komzimba kunye zomzimba, wachaza hemodynamic kunye neempawu rheological igazi, kwakunye neendlela ezifihlakeleyo lokuya kwaso ngokusebenzisa iimpahla.

isakhiwo

Ukujikeleziswa lomntu ayisekho ngaphandle igunya engundoqo yale nkqubo - intliziyo. Kuyinto ezibuhlazarha, hayi kanye mandithi, kwegumbi, umzimba dystrophy, leyo unelona amandla izishunqulelo yayo, enyanisweni, i Dynamics ukuhamba kwegazi. Yaye kwixesha elizayo igalelo kule kwaye wenze izitya, hayi kanye mandithi, udonga lwawo eqatha. A Isangqa enkulu nokuhamba kwegazi endodeni inika phantse umzimba trophic nempefumlo yonke; umntla, imilenze kunye nezibilini. Ngokuqhelekileyo kumka ukusuka arch aortic ngasekhohlo eqhelekileyo kwimithambo carotid (aa.carotis communis) kunye brachiocephalic buti (truncus brachiocephalicus), ukunika amandla ebuchotsheni. Amanye amasebe isitya engundoqo, oqala kwi ventricle lasekhohlo, ezimbili kwemithambo subclavian (aa.subclavia Dexter et yingozi), kwaye ke ngoko - axillary (aa.axillaris) negxalaba (aa.brachialis), ukunika igazi ezandleni. Amalungu kwisisu, isinqe kunye nomlenze trophism asezantsi ifunyenwe ngokusebenzisa aorta esiswini. Igcina kwegazi ezisezantsi ngemithambo ephezulu nomgongxo angena intendelezo ekunene. software Special kulula, ngokuba kwi alveoli zomzimba kukho yenye yeenkqubo ibalulekileyo - exchange igesi phakathi emithanjeni kunye isingxobo somoya apho igazi evela ventricle ekhohlo usebenzisa umzimba pulmonary, ahlanganiswe oksijini ulahlekelwa carbon dioxide. Emva koko ubuyela entliziyweni ukuya ventricle lasekhohlo vv.pulmonales. Le nkqubo yenza isangqa encinane nokuhamba kwegazi labantu.

Unxibelelwano kunye nezinye iinkqubo

Kakade ke, kubaluleke kakhulu gqitha kwaye nemeko iimpahla ngentliziyo negazi, njengoko ixhomekeka kuzo isantya luncedo trophic kunye ukuphefumla ezinye onke amalungu kunye namalaphu. Nangona kunjalo, naziphi na iinkqubo zophendlo lwezifo okanye olucwangcisiweyo emzimbeni kuchaphazela kwegazi labantu zilandelayo kunokubangela yegazi, lwegazi, ukwandisa umthwalo entliziyweni. Ngoko ke, ngokuba ekusebenzeni ngendlela eyiyo kule nkqubo ibaluleke kangaka impilo yomzimba.