Amayendera m'mapapo

Mu anthu, magazi ndi khalidwe chatsekedwa. Tatseka chifukwa alibe kulankhulana ndi chilengedwe kunja. Komanso, makope anthu ladzala ndi iwiri. Kumalizira amatchedwa chifukwa magazi (venous ndi wolumikizira) ndi kusakanizidwa.

thupi akumasula makope yaikuluikulu. Palinso lachitatu. Amatchedwanso "mtima" ndipo amagwiranso ntchito yofunika kwambiri.

M'mapapo (zing'onozing'ono) makope kumayambira ventricle bwino. The Ntchito yaikulu ndi machulukitsidwe magazi oxygen kuchotsa mpweya woipa. Mu mapapo pali kuwombola mpweya.

Small aziyenda ndi motere. Osauka mpweya magazi (venous) akulowa ku ventricle (kumanja) mu thunthu m'mapapo mwanga. Njovu (waukulu mtsempha wamagazi, amene m'gulu kufalitsa m'mapapo mwanga) lagawidwa lamanzere ndi mitsempha bwino (m'mapapo mwanga). Kuchokera otaya bwino kupita mu m'mapapo lamanja, kuchokera kumanzere - lamanzere, motero. kulekana Komanso amapezeka mtsempha wamagazi angapo m'mapapo mwanga mu ang'onoang'ono.

Amayendera m'mapapo zikuphatikizapo capillaries kuti ali pafupi kwambiri koyenera mkati padziko m'mapapo. pamwamba Izi analankhulana ndi mpweya wa mlengalenga. capillaries magazi mu mlengalenga ndi wosiyana yekha mpanda wa capillaries ndi okha kuwala kwambiri woonda khoma. zopinga chotere woonda kuti zinthu zachilendo, mpweya woipa ndi mpweya amatha kulowa mwa iwo mosavuta. Choncho, pali gulu la magawo a ndende apamwamba mu zigawo m'munsi. Chifukwa chakuti mpweya woipa mu mitsempha kwambiri, izo zipita mpweya, kumene safanana ang'onoang'ono. Ndipo, monga mu mpweya monga mpweya mmene akudutsa mu capillaries lapansi.

Ena capillaries m'mapapo mwanga ogwirizana ndi kuyenda mu zotengera lalikulu. Anthu nawonso, kudutsa mu zotengera zikuluzikulu - mitsempha. Chifukwa ndi anayi akuluakulu mtsempha (m'mapapo mwanga). Choncho, makope m'mapapo mwanga zibwere kumapeto mu atrium kumanzere.

makope nthawi yocheza ndi zinayi masekondi asanu. Amayendera m'mapapo kumafuna kayendedwe ka magazi venous mwa mitsempha, ndipo wolumikizira - kudzera mitsempha.

Pali nthawi dera wathunthu. Panthawi imeneyi, magazi akudutsa mabwalo onse - ndi ang'ono ndi lalikulu. Pa zina, zimatenga makumi awiri kuti masekondi makumi atatu. Minofu mavuto kumawonjezera liwiro la. Chifukwa cha kupita kwa magazi kudzera mabwalo onse angakhale kuyambira eyiti masekondi naini.

Kulankhula ofiira kayendedwe madzi m'thupi, m'pofunika kutchula za ziwalo kuti akuchita nawo mmenemo. Choncho, kufalitsa nawo ventricles ndi atria, mitsempha, msempha, capillaries m'munsi ndi chapamwamba vena cava, capillaries m'mapapo mwanga ndi mitsempha, mitsempha, ndi alveoli, coronaria.

Mothandizidwa ndi ziwiya magazi muti musamuke pakati pa ziwalo zosiyanasiyana, zimakhala ndi mtima. Kuchokera mumtima muchokera mtsempha wamagazi. Iwo kutumiza magazi zimakhala ndi ziwalo. Mitsempha amasiyana awiri lalikulu ndi wandiweyani mpanda zotanuka chimene chingathe kupirira kufinya mokwanira mkulu (magazi).

Mitsempha ndi lopangidwa ndi zipolopolo zingapo: lamkati, akunja ndi pakati.

mtima lumen malamulo mantha dongosolo (autonomic) ndi achuluke kapena kuchepa pogwiritsa ntchito minofu yosalala. Kuwonjezeka kapena kuchepa kudzadalira zosowa za wina kapena thupi ena, komanso pa ulamuliro kutentha ozungulira malo.

Mitsempha mu zimakhala ndi ziwalo ikuyenda mu zotengera ndi lumen ang'onoang'ono, pamapeto pake yosintha mu capillaries. Mu pali kuuzana zakudya ndi zinthu zina zofunika kwa moyo pakati pa maselo ndi magazi. Capillaries, nayenso kugwirizana arterioles ndi venules.