Kayendedwe ka magazi kudzera ziwiya. Limagwirira ndi lamulo la magazi

Wopitiriza rhythmic chidule minofu mtima Amathandiza magazi kugonjetsa kukana kuti amalenga kachulukidwe Mitsempha osakaniza ndi kukhuthala yake. A kusiyana magazi aumbike ndipo anakhalabe mbali venous ndi wolumikizira wa magazi dongosolo. Mapangidwe a kusiyana zimenezi ndi zosayembekezereka m'madera a kuthamanga ndi otsika ndi imodzi mwa njira zikuluzikulu imene pali magazi kudzera ziwiya.

magazi

Kugwira ntchito kwa mtima tingauyerekeze mtundu wa ntchito mpope. Aliyense chidule rhythmic wa ventricles mtima kumabweretsa kutulutsidwa mu dongosolo mtima wa gawo lotsatira magazi mpweya, kuchititsa maphunziro a kuthamanga magazi.

Mlingo waukulu kwambiri wa kuthamanga ndi osiyana kayendedwe ka magazi mu msempha, ndi otsika - mu mitsempha ya awiri lalikulu. Pa kuchotsa minofu mtima pali kuchepa magazi, komanso liwiro kayendedwe ka magazi kudzera ziwiya magazi.

ejection magazi mu mitsempha kumachitika mu magulu. Ngakhale izi, thupi zonse anati yothandizira magazi. Mafotokozedwe pakuti ichi mkulu elasticity makoma chotengera. Pa magazi chikuonetseratu wolemera kwa minofu mtima ziwiya khoma kubwera mu chikhalidwe anatambasula ndipo, chifukwa elasticity, ndi kulenga zinthu kusuntha magazi kwa ziwiya yaing'ono.

Limagwirira a magazi kudzera ziwiya zachokera kuthamanga pazipita kumachitika pa nthawi ya chidule cha ventricles mtima. Osachepera kuthamanga zimawonedwa pa zosangalatsa za minofu mtima. Kusiyana pazipita ndi osachepera magazi limanenedwa ngati kuthamanga zimachitika. Ndi ntchito olimba zimachitika kuthamanga limasonyeza kuti mtima akugwira ntchito bwinobwino.

kugunda

m'madera ena a thupi palpation wa khungu limakupatsani kuona kayendedwe rhythmic magazi kudzera ziwiya. zodabwitsazi amatchedwa zimachitika, ozikidwa pa nthawi kutambasuka jerky wolumikizira khoma mchikakamizo cha nyemba mtima.

Kutengera chiwerengero cha zimachitika kumenyedwa akhoza adzaweruzidwa chifukwa nthawi inayake, momwe efficiently minofu mtima kupirira ntchito anatumizidwa izo. Kumva kayendedwe ka magazi kudzera ziwiya, kugunda kwa mtima, mungathe, kukanikiza mwa wina wa mitsempha zikuluzikulu mpaka fupa khungu.

Movement magazi kudzera mitsempha

Kayendedwe ka magazi mu misempha ya M'mimbamo ali peculiarities yake. Mosiyana mtsempha wamagazi, wamng'ono kusintha venous khoma amasiyana kapangidwe pang'ono wakuda ndi zofewa. Chifukwa, magazi akuyenderera mitsempha yaing'ono amalenga kuthamanga pang'ono, koma lalikulu awiri mitsempha pafupifupi wosaoneka, kapena ngakhale wofanana ziro zizindikiro. Choncho, mwazi akuyenderera njira ya venous mtima amafuna kugonjetsa yokoka yake ndi kukhuthala.

A mbali yofunika kwambiri kuonetsetsa mtendere wa otaya venous magazi umachita chowonjezera minofu chidule, chomwenso ndi kukutsogolerani kupezeka pa. Chidule minofu kumabweretsa psinjika mu misempha anadzazidwa ndi magazi, kuchititsa kayendedwe ake kwa mtima.

mtima kamvekedwe

Kapangidwe ka makoma mtima, kupatula capillaries yaing'ono, maziko minofu yosalala, limene imvera kuchepetsa ngakhale sitili pa zinthu humoral kapena ubongo. zodabwitsazi amatchedwa woyambira tonus makoma mtima. Ndipo zochokera tilinazo minofu stretchability, makina makhalidwe kunja sayenda ziwalo, minofu misa.

Woyambira kamvekedwe pamodzi ndi mtima kugunda ndi udindo kayendedwe ka magazi kudzera ziwiya. Kulankhula mu ndondomeko ya kamvekedwe woyambira mu zosiyanasiyana wochita magazi sali yemweyo. Bukuli lili ndi minofu yosalala chidule cha epithelium, komanso ngati zinthu zomwe amalimbikitsa mapangidwe wa lumen mtima, pokhalabe magazi, kupereka kotunga magazi ziwalo.

Mlingo wa magazi kudzera zotengera

Mlingo wa otaya mtima magazi ndi chizindikiro zofunika matenda a kufalitsidwa. Liwiro kunsi kwa kayendedwe magazi zimawonedwa mu maukonde capillary ndi apamwamba - mu msempha. Action wa chitsanzo umabweretsanso yofunika tanthauzo zamoyo monga kayendedwe pang'onopang'ono magazi mpweya kulemera ndi zakudya zinthu zimathandiza kuti yogawa awo zomveka mu zimakhala ndi ziwalo.

magazi mathamangidwe

Kusiyanitsa mlingo liniya ndi volumetric magazi. Calculated index liniya magazi mathamangidwe zochokera mtima wa okwana gawo mtanda wa dongosolo mtima. Onse mtanda Chigawo cha akaphatikiza capillary zopezera thupi maulendo wamkulu kuposa lumen wa chotengera thinnest - ndi msempha, pamene mathamangidwe liniya kufika mlingo pazipita.

Mogwirizana chakuti mtsempha wamagazi wina kwa mitsempha kuposa awiri mu thupi la munthu, n'zosadabwitsa kuti nthawi njira okwana lumen venous angapo kuposa wolumikizira lapansi. Zimenezi kumapangitsa kuti kuchepa mathamangidwe venous magazi ndi pafupifupi theka. liniya liwiro zizindikiro dzenje mitsempha liri za masentimita 25 / Mph ndipo kawirikawiri upambana mtengo uwu.

otaya mathamangidwe Volumetric

Khama la buku magazi kusamutsidwa liwiro zochokera masamu chiwerengero pamene akuchita bwalo zonse mwa dongosolo mtima pa gulu la nthawi. Pankhaniyi, anataya amachititsa kayendedwe ka magazi kudzera ziwiya, chifukwa njira iliyonse conductive nthawi akudutsa ofanana kuchuluka kwa magazi pa nthawi wagawo.

Kumalizidwa nthawi ya dera ndi nthawi imene magazi ali nthawi ipyole pa ang'ono ndi lalikulu kufalitsidwa. Pamene wathanzi mtima ntchito ndi kukhalapo za 70-80 kumenyedwa pa gulu mphindi adzala mwazi kudzera ziwiya ndi kumalizidwa kwa dera udzachitika pafupifupi 22-23 masekondi.

Zinthu achititsa kuti otaya yogwira magazi

Kuona, T. E. Chinthu osakhala amene amapereka limagwirira kuti kayendedwe ka magazi kudzera ziwiya, ndi ntchito ya minofu mtima. Komabe, pali osiyanasiyana ofunika kuonetsetsa otaya zinthu wothandiza, mwa amene ayenera utoto

• chatsekedwa chikhalidwe cha dongosolo mtima;
• Sankhani zizindikiro zosiyana kuthamanga mu dzenje mtsempha, msempha ndi ziwiya;
• elasticity, elasticity makoma chotengera;
• kugwira ntchito kwa chipangizo mtima valavu amene amapereka magazi akusuntha mu njira yomweyo;
• kukhalapo kwa minofu yake,, intrathoracic kuthamanga;
• ntchito kupuma, imbaenda ku suction kukhudzana kwa magazi.

Maphunziro a dongosolo mtima

Healthy lamulo la magazi kudzera ziwiya n'chotheka pansi pa chisamaliro cha mtima ndi maphunziro ake. Pa-maphunziro mtanda ayenera kuti minofu oxygenation ukuwonjezeka kwambiri. Chifukwa cha zimenezi, kuonetsetsa moyo wa chamoyo mtima ali kutulutsa magazi kwambiri kuposa thupi kukhala mu mkhalidwe zina.

Anthu amene ali wofooka, pafupifupi immobile moyo, ndi zifukwa kwa kayendedwe ka magazi kudzera ziwiya - ichi chokha yofulumizitsa kugunda kwa mtima. Komabe, nthawi zonse kukhala mwapanikizika, popanda kutsegula zinthu wothandiza wa magazi, minofu mtima pang'onopang'ono kuyambira kulephera. Zotsatira kumabweretsa kutopa mtima kulimbitsa kotunga magazi zimakhala ndi ziwalo amapezeka mwachidule, nthawi yochepa. Pomaliza, kupanda ntchito za chamoyo wonse, umalimbana kusuntha magazi, zimathandiza munthu kuwonongeka Amowabu za mtima.

Kuphunzitsidwa kusuntha kwa anthu amene si mlendo kwa zolimbitsa thupi, kaya ndi masewera kapena zinthu chifukwa cha ntchito, ndi tizipatse mtima. Kuphunzitsidwa mtima minofu amatha kupereka khola magazi popanda kutopa pa nthawi yaitali. Motero, yogwira m'manja moyo, chanzeru zomveka kusinthana kwa zina kuchita masewera olimbitsa thupi komanso zimathandiza kulimbitsa mtima ndi njira mtima wonse.