Kiyasta lokacin karantawa: 4 minti daya
Table of Contents
DrJanaOfficial, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, ta hanyar Wikimedia Commons
Zagayowar zuciya wani zagayowar ne da ke tattare da ƙanƙanwar zuciya (systole) da annashuwa (diastole). Wannan tsari yana tabbatar da kwararar jini a cikin tsari tsakanin ɗakunan zuciya da kuma cikin wurare dabam dabam. Zagayen zuciya ya ƙunshi jerin matakai, kuma wasu al'amura suna faruwa a jere a cikin waɗannan matakan. Anan ga matakan zagayen zuciya daki-daki:
Diastole (Lalacewar Zuciya)
DiastoleDiastole shine lokacin da zuciya ke sakin jiki kuma jini ya cika ɗakunan zuciya. Subphases guda uku suna faruwa yayin diastole:
A. Matsayin shakatawa na Isovolumetric: Hannun ventricles suna hutawa amma har yanzu basu cika da jini ba. Bawuloli na semilunar (aortic da na huhu) suna rufe. Ba a buɗe bawuloli na atrioventricular (mitral da tricuspid valves) tukuna. Matsin da ke cikin ventricles yana raguwa da sauri, amma matsa lamba a cikin atria bai riga ya isa ya cika ventricles ba. Hannun ventricles suna shirya don cikawa na gaba.
B. Matakin Cika Saurin Cika Hannu: Jini a cikin atria da sauri yana cika ventricles yayin da bawuloli na atrioventricular buɗe. Matsin da ke cikin atria ya wuce matsa lamba na ventricular, kuma jini yana gudana cikin sauri zuwa cikin ventricles. A wannan lokaci, ventricles suna cikawa da sauri, tare da yawancin jini suna cika ventricles.
C. Matakin Cike Sannun Hannu (Diastasis): Jinin jini yana raguwa, amma ventricles na ci gaba da cikawa. Matsalolin Atrial da ventricular sun kusan daidaita. Gudun jini yana raguwa amma baya tsayawa gaba daya. Hannun ventricles suna kusanci da cikakken ƙarfi.
Christinelmiller, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, ta hanyar Wikimedia Commons
Atrial Systole (Ƙarancin Atria)
Atrial systole shine raguwar atria, wanda ke tilasta ƙarin jini zuwa cikin ventricles. Lokacin da kwangilar atria, ventricles suna cike da ƙarfi. Wannan lokaci yana ba da damar ventricles don cika ƙarfin su (gudunmawar ciko 20-30%). Bawuloli na atrioventricular sun kasance a buɗe, kuma ventricles sun kai matsakaicin cikawa.
Systole (Maganin Zuciya)
Systole shine lokaci wanda ventricles ke yin kwangila kuma suna zubar da jini zuwa wurare dabam dabam. Ya ƙunshi manyan matakai guda biyu:
A. Matsayin Kwangilar Isovolumetric: Hannun ventricles sun fara haɗuwa, amma jini bai fito ba tukuna. Ƙaƙƙarfan bawul ɗin atrioventricular (mitral da tricuspid) suna rufe. Har yanzu ba a buɗe bawuloli na semilunar (aortic da na huhu) ba tukuna. Matsin da ke cikin ventricles yana tashi da sauri. Matsin ventricular yana ƙaruwa sosai don tilasta bawul ɗin semilunar buɗe.
B. Matakin fitarwa: Ana fitar da jini daga ventricles zuwa manyan tasoshin. Hannun ventricle na dama yana aika jini zuwa jijiya na huhu; ventricle na hagu yana aika jini zuwa aorta. Bawuloli na semilunar suna buɗewa, kuma jini yana shiga wurare dabam dabam. Hannun ventricles suna fitar da jini yayin ƙanƙara, amma wasu jini ya rage a cikin ventricles (ƙarar saura). An yi nasarar zub da jinin cikin zagayawa.
Kwalejin OpenStax, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, ta hanyar Wikimedia Commons
Nishaɗin Isovolumetric (Shaƙatawa Bayan-Systolic)
A lokacin lokacin shakatawa na isovolumetric, ventricles suna hutawa amma har yanzu basu cika da jini ba. The semilunar bawuloli rufe. Har yanzu ba a buɗe bawuloli na atrioventricular ba. Matsin da ke cikin ventricles yana raguwa da sauri. Zuciya ta shirya don zagayowar gaba.
Matsa lamba da Canje-canje
Lokacin zagayowar zuciya, matsi da ƙarar jini a sassa daban-daban na zuciya suna canzawa koyaushe:
• Matsi na Atrial: Lokacin kwangilar atria, matsa lamba yana ƙaruwa kuma idan sun huta, yana raguwa.
• Matsin Hanta: Lokacin da ventricles suka yi kwangila, matsa lamba yana tashi kuma ana fitar da jini; idan sun huta, matsa lamba yana faɗuwa kuma jini ya cika.
• Ciwon Aortic da Pulmonary: Yayin da ake zubar da jini cikin wadannan tasoshin, matsa lamba yana karuwa.
Sautin Zuciya a Zagayen Zuciya
• S1 (Sautin Zuciya ta Farko): Ana samar da shi ta hanyar rufewar bawuloli na atrioventricular. Sautin "madauki".
• S2 (Sautin Zuciya na Biyu): Ana samar da shi ta hanyar rufewa na semilunar valves. Sautin "dup".
Zagayowar zuciya shine tsarin haɗin gwiwa wanda ke ba da damar zuciya don zubar da jini zuwa huhu da jiki. Ƙunƙarar da kwanciyar hankali na atria da ventricles suna tabbatar da cewa jini yana gudana a madaidaiciyar hanya, ƙyale kyallen takarda don karɓar iskar oxygen da abubuwan gina jiki yayin cire sharar gida. Tsarin wutar lantarki na zuciya yana daidaita wannan zagayowar kuma yana daidaita ayyukanta na rhythmic.
Wasu Labarun Kuna iya Sha'awarsu
"Ga wanda ba dole ba ne ya yi rayuwa daga kimiyya, kimiyya abu ne mai ban mamaki."
Albert Einstein
