Cardiac madugu tsarin: tsarin, aiki da ilimin Halittar Jiki da kuma physiological siffofin

An muhimmanci halayyar da aikin na zuciya tsoka ne automatism ragi. To hadewa aikin na zuciya, wanda dogara ne a kan bi da bi ƙanƙancewa da shakatawa na da tsoka nama na atria da ventricles, gudanar da jijiyar kayyade ta da wani salon salula tsarin da mai rikitarwa tsarin.

A conductive tsarin na zuciya - wani muhimmanci inji tabbatar da aiki da mutum kwayoyin, kunsha na bugun jini janareta (pacemaker) da kuma mutum hadaddun tsarin nufi ga innervation infarction hawan keke. Kunsha da wani salon salula tsarin, wanda dogara ne a kan aikin P-Kwayoyin da T-Kwayoyin, shi ne aka yi nufi ga fara da daidaita da zuciya ƙanƙancewa na zuciya da bẽnãye. A farko da irin Kwayoyin yana da muhimmanci physiological ayyuka na automaton - da damar for rhythmic contractions ba tare da wani da kar dangane da tasirin wata waje samuwar kasashe.

T Kwayoyin, bi da bi, da contractile turu watsa damar generated P-Kwayoyin zuwa myocardium, wadda tabbatar matsala-free aiki. Saboda haka, kade-kade tsarin na zuciya, wanda dogara ne a kan Physiology na santsi hulda da wadannan kungiyoyin biyu na Kwayoyin, shi ne guda nazarin halittu inji ne da fasali mai kunshe a cikin cardiac naúrar.

Gudanar da mutum cardiac tsarin kunshi dama aikin gyara: da sinoatrial kumburi da atrioventricular da cuta reshe block a dama da hagu kafafu, ƙare da Purkinje zaruruwa. Sinoatrial (sinus) kumburi located in dama atrium, shi ne wani karamin taro na tsoka zaruruwa elliptical siffar. Shi ne a cikin wannan bangaren, wanda ta fara da kade-kade tsarin na zuciya, da aka generated jijiyar, haddasa contractile martani da dukan zuciyata. Automata al'ada sinoatrial kumburi aka dauke su daga hamsin zuwa tamanin hatsaisai da minti.

Atrioventricular bangaren located kasa da endocardium a cikin na baya sashi daga cikin interatrial septum, wani muhimmin aiki na da bata lokaci ba, tacewa da kuma redistribution na shigowa hatsaisai generated da kuma aika zuwa ga sinoatrial kumburi. Cardiac madugu tsarin kuma ya aikata aikin tsara da kuma raba ayyuka sanya shi a tsarin bangaren - da atrioventricular kumburi.

Bukatar irin wannan aiki saboda gaskiyar cewa kalaman na jijiyar, nan take yada ta cikin atria tsarin da kuma haddasa su mayar da martani contractile martani nan da nan shiga cikin ventricles na zuciya ne ba iya, saboda atrial myocardium na ventricles rabu da fibrous nama, kada ku miss da jijiyar. Kuma kawai a yankin na atrioventricular kumburi don haka babu wani warkarwa shãmaki. Wannan sa bugun jini kalaman a search na wata hanya zuwa gurin wannan muhimmin bangaren, inda a can ne su uniform rarraba a ko'ina cikin cardiac naúrar.

Cardiac madugu tsarin ma ya ƙunshi a cikin tsarin mai cuta reshe block, dauri atrial da kuma na ramin zuciya myocardium, da kuma Purkinje zaruruwa, wanda ya samar da synapses a kan kardiomiotsitarnyh Kwayoyin kuma samar da zama dole interfacing na tsoka ƙanƙancewa da kuma na tsarin jijiya ruri. A da ginshikin, da fiber data ne karshe sashe cuta reshe block, a haɗe zuwa subendocardial plexus na ventricles na zuciya.