Ukuhanjiswa igazi iimpahla. Indlela kunye ummiselo nokuhamba kwegazi

Continuous nokuncipha zesingqisho umsipha ivumela igazi ukoyisa uxhathiso ukuba kudala lexinene imithambo yegazi nodibaniso viscosity yayo. A umahluko uxinzelelo lwegazi ibunjiwe igcinwe izabelo lwemithambo kwaye esimbaxa le kwegazi nkqubo. Ukuqulunqwa kwe umahluko onjalo kunye nokwenzeka kwiindawo koxinzelelo oluphezulu nezisezantsi yenye yeendlela ezinkulu apho kukho flow igazi ngokusebenzisa iimpahla.

uxinzelelo lwegazi

Ukusebenza intliziyo kunokufaniswa uhlobo yokusebenza pump. nokuncipha nganye zesingqisho le ventricles intliziyo kukhokelela ukukhululwa ukuya olujikeleza wesahlulo elandelayo igazi nomoya, ibangela imfundo uxinzelelo lwegazi.

Lo ngumphakamo omkhulu xi intshukumo ezahlukeneyo egazini aorta, kwaye iphantsi - ngemithambo ye enobubanzi enkulu. Ngexesha ukususwa zihlunu kwentliziyo kukho ukuhla uxinzelelo lwegazi, kwakunye njengengubo ukuhamba kwegazi ngenxa imithambo yegazi.

ejection of igazi kwemithambo kwenzeka ngokwamaqela. Ngaphandle koku, umzimba rhoqo waphawula eyayinethombo legazi oluqhubekayo. Nhlamuselo kuba oko luthambe eziphakamileyo iindonga isitya. On okwamkelwa igazi elinomoya ukusuka izihlunu intliziyo izitya eludongeni kuza kwi imeko soluliwe yaye, ngenxa luthambe, ukudala iimeko ihamba igazi ukhangele izinto ezincinane.

Indlela yokumpompoza kwegazi ngokusebenzisa iimpahla isekelwe uxinzelelo oluphezulu kwenzeka ngexesha yindibanisela ventricles inhliziyo. Ubuncinane xi waphawula ngexesha ukucuthwa imisipha yenhliziyo. Umahluko phakathi kwelona qondo uxinzelelo lwegazi uchazwa uxinzelelo ukubetha. Nantso ukuba intsebenzo esiluqilima koxinzelelo ukubetha ibonisa ukuba intliziyo lisebenza ngokuqhelekileyo.

ukubetha

imimandla ethile yomzimba Ngokucofa yabantu ulusu ikuvumela ukuba babone intshukumo zesingqisho igazi ngokusebenzisa iimpahla. Le nto ibizwa ngokuba ukubetha kwentliziyo, olusekelwe phezu ulwandiso ezixhuzuxhuzulayo esimbaxa eludongeni ngamaxesha phantsi kwempembelelo la inhliziyo.

Ngokusekelwe inani ibetha ukubetha nga ndimangalelwa ngenxa ixesha elithile, indlela eyiyo imisipha intliziyo ukuba banganako na ukumelana nomsebenzi eyabelwe yona. Mamela ukuhamba kwegazi ngokusebenzisa ezityeni, intliziyo rate, wena ungakwazi, ngokucinezela ngesikhumba omnye imithambo ezinkulu ukuya ithambo.

Movement igazi yegazi

Ukuhanjiswa igazi ngemithambo ze lweHo- iye awohluke yayo. Ngokungafaniyo Umthambo, udonga ubuncinane bhetyebhetye lwemithambo ziyahluka texture obukhulu kancinane kwaye ethambileyo. Ngenxa yoko, igazi lihambe nge mithambo ezincinane kubangela uxinzelelo encinane, kodwa emithanjeni ubukhulu enkulu phantse engabonakaliyo, okanye ilingana nezalathisi zero. Ngoko ke, igazi lihambe Iindlela lwemithambo entliziyweni kufuna ekoyiseni womxhuzulane zayo kwaye viscosity.

A indima ebaluleke kakhulu ekuqinisekiseni uzinzo yokumpompoza kwegazi lwemithambo udlala imisipha na isincedisi, nto leyo nayo inxaxheba ngqo kwi kwegazi. Yindibanisela izihlunu kukhokelela ucinezelo of emithanjeni lizele ligazi, ibangela intshukumo ayo, ibheke intliziyo.

tone olujikeleza

Ubume beendonga yegazi, ngaphandle emithanjeni ezincinane, isekelwe esihlunwini ezimkhuthuka, baphantsi ukuthotywa xa kungekho zizathu humoral okanye zemithambo. Le nto ibizwa ngokuba usuke ufe Basal yeendonga nemithambo. Kwaye zisekelwe phezu uvakalelo le stretchability esiqwini, impembelelo zangaphandle amalungu ukuhamba ngomatshini, izihlunu mass.

ithoni carcinoma kunye yabetha intliziyo inoxanduva ukuhamba kwegazi ngokusebenzisa iimpahla. Ichazwe kwinkqubo ithoni carcinomas ngeendlela ezahlukahlukeneyo ngeendlela ukuqhuba igazi akufani. Oku kusekelwe egudileyo izihlunu yindibanisela le epithelium, kwakunye nemiqathango ekhuthaza lokusekwa sayo semithambo, lo gama kugcinwe uxinzelelo lwegazi, enika unikezelo igazi ezithweni.

Izinga lokuhamba kwegazi ngokusebenzisa iimpahla

Izinga lokuhamba kwegazi semithambo sisalathisi ebalulekileyo lokufunyaniswa ejikeleza. Isantya lisezantsi intshukumo igazi iqatshelwe kuthungelwano capillary, yaye liphezulu - kule aorta. Action yale ndlela ihambisana akwaziqonda ebalulekileyo zebhayoloji, njengoko intshukumo kade ioksijini-igazi elinomoya kunye nezondlo izinto ezinegalelo usasazo ubengo, zomzimba kunye namaziko.

Blood flow Velocity

Ukwahlula isantya sokuqukuqela igazi yomgama kunye womthamo. index kubalwa flow igazi yomgama Velocity ngokusekelwe ukumiselwa icandelo lilonke umnqamlezo olujikeleza. Eli candelo lilonke umnqamlezo kuthungelwano capillary isambuku umzimba womntu amakhulukhulu amaxesha obungaphezu mithambo benqanawa thinnest - le aorta, apho uqina yomgama ufikelela izinga eliphezulu.

Kuthathelwa ingqalelo into yokuba omnye umthambo ukuze emithanjeni ngaphezu ezimbini emzimbeni womntu, ayimangalisi into yokuba amaxesha iindlela i sayo zizonke lwemithambo eziliqela ngaphezu emithanjeni. Oku kukhokelela ekuncipheni lwemithambo ukuhamba kwegazi Velocity phantse isiqingatha. Iimpawu Isantya yomgama ngemithambo umngxuma ilingana malunga-25 cm / min rarely ngaphezulu eli xabiso.

Womthamo flow Velocity

Ukuzimisela speed ukubana umthamo wegazi olusekelwe kwimali iyonke ibalwa xa esenza isangqa ngokupheleleyo ngenxa olujikeleza phezu iyunithi ixesha. Kulo mzekelo, elahliweyo ebangela intshukumo igazi ezityeni, ekubeni nayiphi na indlela conductive usoloko ipasisa isixa esilingana wegazi nganye kwexesha unit.

Ixesha kokugqitywa elijikeleza ixesha apho igazi ixesha iphumele amancinane enkulu ejikelezayo. Xa enempilo umsebenzi intliziyo kunye nobukho malunga 70-80 Beats intshukumo ngomzuzu zizele ligazi ngokusebenzisa iimpahla kunye nokuzaliswa wesekethe kuthatha indawo imizuzwana malunga 22-23.

Imiba ezinegalelo ukuhamba kwegazi esebenzayo

Xa kukhangelwa, t. E. Izinto nakolu ukuba kube nendlela ukuhamba kwegazi ngokusebenzisa iimpahla, ngumsebenzi imisipha yenhliziyo. Noko ke, kukho iintlobo ngeentlobo kubaluleke ngokulinganayo ukuqinisekisa izinto flow abangabancedani, phakathi leyo kumele ziphawuliwe:

• uhlobo okuvala olujikeleza;
• Khetha izibonisi umahluko xi Kwangale emgongxweni, aorta kunye nempahla;
• luthambe, lo luthambe kweendonga ngesitya;
• ukusebenza isixhobo yentliziyo nokufakelwa obonelela igazi ihamba kwicala elinye;
• ubukho izihlunu, iziko, uxinzelelo intrathoracic;
• umsebenzi yokuphefumla, nto leyo ekhokelela ukuba sokufunxa ukusuleleka yegazi.

Uqeqesho nemithambo yegazi

ulawulo Healthy yokumpompoza kwegazi ngokusebenzisa iimpahla kunokwenzeka kuphela phantsi unonophelo imeko sentliziyo kunye noqeqesho yakhe. Ngexesha uqeqesho cross-kufuneka lonyuso zeethishu oxygenation kakhulu. Ngenxa yoko, ukuba ukuqinisekisa ibubomi kumzimba intliziyo kufuneka yokumpompa igazi elininzi kakhulu kunokuba umzimba sibe kwimo yokuphumla.

Abantu abane engasebenziyo, lifestyle phantse ukugogeka, izizathu eziphambili ezibangela ukuhamba kwegazi ngokusebenzisa iimpahla - oku obadlisa ubomi kuphela izinga intliziyo. Noko ke, ekubeni rhoqo phantsi koxinzelelo, ngaphandle ukusebenza yeemeko abangabancedani yokumpompoza kwegazi, imisipha intliziyo kuxhaphaka ekuqaleni ukuba ndingagevezeli. Le meko ikhokelela fatigue intliziyo njengoko ekomelezeni ubonelelo igazi ancedisana amalungu kwenzeka emfutshane, ixesha lifutshane. Ekugqibeleni, ukunqongophala umsebenzi yonke ephilayo, ezijolise ihamba igazi, kukhokelela ukwehla okuphawulekayo kwentliziyo.

Abaqeqeshiweyo yokuhambisa abantu abangengabo yayintsha umsebenzi rhoqo emzimbeni, nokuba ezemidlalo okanye imisebenzi ngenxa yomsebenzi, sibe nentliziyo womelele usempilweni. Abaqeqeshiweyo umsipha iyakwazi ukunikezela kwegazi ezinzileyo ngaphandle ukudinwa kangangethuba elide. Ngoko ke, i yokuphila esebenzayo mobile, alternation onengqondo ubengo ekuphumleni umthambo kukwayinxalenye ukomeleza intliziyo kunye nemithambo yegazi xa iyonke.