Njira yotulutsika, yomwe imadziwikanso kuti mtima wa mitsempha ya mtima, imakhala yosavuta kumayambira, ndipo imatha, ndi mtima wanu. Ndi njira yotsekedwa, kutanthauza kuti magazi salowa kapena kuchoka panthawiyi kuchokera pa mtima kupita ku thupi lanu ndi kubwereranso. Mu njira yotereyi, kuyendayenda kothamanga kwa madzi omwewo kungapulumuke kupyola muyeso mobwerezabwereza.
Magazi amagawidwa mumthupi mwathu kudzera m'thupi lanu - mitsempha , arterioles, ndi capillaries - ndipo amabwereranso mumtima mwanu kudzera m'matumbo ndi mitsempha. Magazi anu ndi ofunikira kuti mukhale ndi thanzi labwino ndipo mumayendera zakudya zopatsa thanzi monga electrolytes, oxygen, carbon dioxide ndi amino acid m'thupi lanu lonse. Mtima wanu uli ndi ntchito yambiri yozungulira kayendetsedwe ka kayendetsedwe ka kayendedwe kake ndipo ndi kumene kumayambira.
Kuzungulira Kumayambira Mu Mtima Wanu
Ndondomeko yoyendayenda imayambira pamalo anu abwino, chipinda cham'mwamba cha mtima wanu. Mwazi umayenda kupyolera mu mtima wanu, umadutsa m'zipinda zinayi (kumanja kumanja, kumanja kumanja, kumanzere kumanzere, kumunsi kumanzere), zimathamangitsira mapapu mwamsanga kuti zichotse carbon dioxide ndi kutulutsa mpweya, ndipo zimatha m'chipinda cham'munsi chamanzere, chotchedwa ventricle kumanzere.
Pankhani yofalitsa magazi m'thupi lanu, ventricle ya kumanzere ndi chipinda chofunika kwambiri mu mtima.
Vutoli lamanzere ndilo lalikulu kwambiri pa zipinda zinayi ndipo liri ndi udindo wopanga mphamvu yofunikira kuti lipititse mwazi wanu kuchokera ku aorta yanu, mitsempha yoyamba magazi anu alowa pamene akusiya mtima wanu.
Kuchokera ku Aorta Anu kupita ku Capillaries Yanu
Magazi anu amayenda kuchokera ku aorta anu kudzera mndandanda wa mitsempha yaing'ono yamagazi mpaka iyo ikafika pa capillaries yanu.
Koma musanafike pa capillaries anu, mwazi umayenera kudutsa mu arterioles, kumene liwiro lake ndi kupanikizidwa nthawi zonse zimakhala zigawo zosiyana siyana za arterioles kusintha madiresi chifukwa cha kupanikizika ndi makina a mankhwala omwe ali pafupi. Masensawa amasintha magazi kutuluka kudzera mu arterioles potengera kusintha kwa thupi lanu.
Chifukwa cha mphamvu ya arteriole, nthawi yomwe magazi anu amafika pamapiko anu, sikutinso akuyenda mofulumira. Magazi amayenda mosalekeza kupyolera mwa capillaries, si "squirt" ndi "pause" pamene mtima wanu umagunda. Kuyenda kotereku n'kofunikira chifukwa pali kusintha kosintha kwa mpweya ndi zakudya zomwe zimapezeka mumakoma a capillary. Palibe selo m'thupi liri kutali ndi capillary.
Bwererani ku Mtima Wanu Ndiponso Pomwe Mukubwerezanso
Pamene magazi amayenda kupyola ma capillaries, mpweya wake umachepetsedwa ndipo watenga zinyalala. Kuchokera kwa capillaries, magazi amalowa m'mitsempha, mitsempha, kenako amayendanso kumtima kuti amatsitsimulidwe ndi kutumizidwa kachiwiri.
Pomalizira, mtima wanu umagwira ntchito ngati mpope yomwe imapereka zakudya ku ziwalo zonse, minofu, ndi selo m'thupi lanu lonse. Komanso, maselo anu amataya zinthu zonyansa, monga mpweya woipa, kubwerera m'magazi anu kuti mubwezeretsedwe pamtima mwanu.