Yintoni na imithambo umahluko emithanjeni: iimpawu isakhiwo nokusebenza

Inkqubo yegazi womntu, ngaphandle kokuba intliziyo, iquka indlela eyahlukileyo ubungakanani, ubukhulu, isakhiwo kunye nemisebenzi nempahla. Yintoni umahluko kwemithambo, imithambo yegazi kunye emithanjeni? Ziziphi iimpawu yesakhiwo kwenza kunokwenzeka ukuphunyezwa imisebenzi ebalulekileyo? Ezi kunye nezinye mibuzo aza kuphendulwa kweli nqaku.

kwegazi

Yenza imisebenzi igazi kunokwenzeka ngenxa sindululo yayo ecaleni inkqubo isitya igazi. Ama izishunqulelo zesingqisho imisebenzi intliziyo ngathi impompo. Lihambe imithambo yegazi, igazi ohambisa izondlo, ioksijini kunye carbon dioxide, ukukhusela umzimba xa ulele, iqinisekisa homeostasis yokusingqongileyo lwangaphakathi.

Kuba iimpahla ziquka imithambo, emithanjeni ngemithambo. Ngokucacisa igazi indlela emzimbeni. Yintoni umahluko yegazi umthambo? Ise lwesakhiwo emzimbeni kunye nemisebenzi eyenziwa. Makhe sihlolisise ngokweenkcukacha.

Kwemithambo ziyahluka ukusuka yegazi: izinto awohluke ka

Imithambo - iimpahla ezibonelela igazi ngokwentliziyo ancedisana amalungu. Kwemithambo inkulu emzimbeni kuthiwa igama elithi "aorta". It avela entliziyweni ngqo. Kule imithambo yegazi ihamba phantsi koxinzelelo oluphezulu. Ukuze uphile, isakhiwo olufanelekileyo iindonga. Ziqulethe ngeengcamba ezintathu. Yabumba inyama yangaphakathi langaphandle nokuqina kunye medium - Imisonto kwezihlunu. Ngenxa kule sakhiwo, ezi iimpahla ekwaziyo ekusoluleni, yaye ngaloo ndlela ungakwazi ukumelana uxinzelelo oluphezulu lwegazi.

Ubume yegazi yahlukile isakhiwo kwemithambo? Okokuqala zonke iimpahla olunye uhlobo ethumela igazi evela Amalungu nezihlunu intliziyo. Emva kokutyhutyha zonke iiseli kwaye amalungu, oko Igcwele carbon dioxide, nto leyo ezisa ukukhanya.

Omnye umbuzo obalulekileyo - Nguwo lo ke umahluko phakathi isakhiwo iindonga kwemithambo ngemithambo. Le yokugqibela kufuneka umaleko kwezihlunu ukubhitya, ke elastic kangako. Njengoko igazi kwemali emithanjeni phantsi koxinzelelo kancinane, stretchability sabo ibalulekile.

Ubukhulu uxinzelelo lwegazi nasezimpahleni yeentlobo ezahlukeneyo zibonisa iintlobo ezahlukeneyo ukopha. Xa igazi wegazi kunye nomkhosi sakhulula umthombo eliguquguqukayo. Yayibomvu njengoko mpilo. Kodwa lwemithambo - kulandela njengomlambo kade, kwaye umbala emnyama. Ixhomekeka isixa esikhulu carbon dioxide.

Uninzi mithambo umthambo i kwemithambo ipokotho ezizodwa ezithintela intshukumo igazi kwicala elahlukileyo.

emithanjeni

Yintoni na imithambo umahluko emithanjeni, siyaqonda. Makhe sinikele ingqalelo kweyona incinane imithambo yegazi - emithanjeni. Zenza uhlobo olulodwa izihlunu sommandla - endothelium. Ithwalwa ngokusebenzisa yokucolwa phakathi ulwelo Embi negazi. Ngenxa kule kukho exchange eliqhubekekayo zegesi.

Umthambo eshiya intliziyo, phula phezulu emithanjeni ukuba ezifanelekileyo kwiseli nganye emzimbeni, ukuhlanganisa ulwazi zibe venules. Nevuthisayo ngexesha ke, oxhulumene kwi imikhumbi emikhulu. Bona ngokuba imithambo, eziyinxalenye kwentliziyo. Kule igazi oluqhubekayo emithanjeni ukuhamba kudlala indima ebalulekileyo ukudibana ngqo phakathi izinto zegazi kwiiseli yonke eziphilayo.

Ukuhanjiswa igazi iimpahla

Yintoni na imithambo umahluko emithanjeni, kwaye sibonisa indlela lokuhamba kwegazi. Ngexesha yindibanisela imisipha kwentliziyo ngamandla igazi wangena umthambo. I inkulu of them - aorta, uxinzelelo besukelana mmHg 150. Art. Le emithanjeni i kakhulu azezi kwinqanaba 20. Uxinzelelo umngxuma lwemithambo yi zincinane kwaye kuthetha ukuba 3-8 mm HG. Art.

Yintoni ithoni kunye wegazi?

Xa imeko eqhelekileyo umzimba zonke iimpahla ikwimeko undervoltage - tone. Ukuba ithoni inyuswe, imithambo yegazi uqalise ukuvala. Oku kukhokelela ubunzima obungakumbi. Xa le meko kuba sizinzile ngokwaneleyo, kukho imeko ebizwa lwegazi. Reverse inkqubo decompression ixesha elide - hypotension. Zombini ezi zifo zinobungozi kakhulu. Enyanisweni kwimeko yokuqala yemeko nemithambo kunokukhokelela ukuphazamiseka ngengqibelelo yalo, elinesibini - ngokonakala igazi ezithweni.

UPawulos: imithambo ezahlukeneyo emithanjeni? Esi sakhiwo ethile beendonga, ubukho kwemithambo, indawo kuthelekiswa intliziyo kunye nemisebenzi eyenziwa.