Cardiac oona tsamaisong conduction: sebopeho, mosebetsi le litšobotsi anatomical le fisioloji

E bath bohlokoa tsa mosebetsi oa mesifa pelo e automatism tsa bohlokoa tse fokotsang. Hantle hokahanngoa mosebetsi oa pelo, e leng e thehilweng ka khutsufatso sequential le boikhathollo ba ho mesifa dinama tse nyenyane tse ea atria le ventricles, khanna litakatso tsa methapo ea kutlo e laoloa ke sebopeho sa lisele le sebopeho rarahaneng.

tsamaiso e khopo A conductive ba pelo - e mochine bohlokwa ho etsa bonnete ba tshebetsong ya phelang ea batho, e bopilweng ka e pulse length jenereithara (sethusapelo) le batho ka bomong lihlopha rarahaneng ne a rerile hore ka lipotoloho innervation infarction. E entsoeng ka ka sebopeho sa lisele, eo e thehiloe mosebetsi P-lisele le T-lisele tse, e reretsoe ho qapa le ho hokahanya pelo khutsufatso ea likamore pelo. The mofuta pele lisele tse nang le mesebetsi ea bohlokoa ea bohloeki ba automaton - matla a ho pelehi morethetho ntle mabapi efe kapa efe tsau le tšusumetso ea susumetsa ba bang leha e le efe ka ntle.

lisele tse T, le eena, a ba le contractile tšusumetso e tsoang ho phetiso bokgoni generated P-lisele tse ho myocardium, e leng etsa bonnete ba mathateng ntle tshebetso. Kahoo, tsamaisong tso'ara ba pelo, e leng e thehiloe physiology ba sebelisana le boreleli la lihlopha tsena tse peli tsa lisele tse, e le le leng feela likokoana-hloko mochine e structurally kenyelelitsoe unit cardiac.

Khanna batho oona tsamaisong cardiac na le metsoako e 'maloa tshebetso: ya noutu sinoatrial le atrioventricular le sosobaneng le literata ea lekala ka ho le letona le ho le letšehali maoto le, ho ipolaea ka Purkinje likhoele. Sinoatrial (sinus) noute teng ka atrium letona, ke le boima senyenyane sa likhoele mesifa elliptical sebopeho. Ho ka karolo ena, eo e qala ka tsamaiso ea khannang thuto ea pelo, a generated litakatso tsa methapo ea kutlo, etsa hore likarabo contractile ka pelo ea ka eohle. Automata tloaelehile noute sinoatrial e nkoa e le ho tloha linaoa mashome a mahlano ho mashome a robeli ka motsotso.

Atrioventricular karolo teng ka tlase endocardium tse kamorao karolo ea septum interatrial, e mosebetsi oa bohlokoa oa ho tšenyo ea nako, filtara e le kabobotjha tsa linaoa o tlang generated le rometseng ho noute sinoatrial. Cardiac conduction tsamaiso e khopo hape o etsa mesebetsi taolo le kgaoganyi abeloa ho e le karolo mehaho - the noute atrioventricular.

Ho hlokahala hore mosebetsi o joalo ka lebaka la hore le leqhubu la litakatso tsa methapo ea kutlo, hang-hang ho jala ka tsamaiso atria le ho etsa hore karabelo ea bona contractile ka karabelo hang-hang phunyeletse ka ventricles ba pelo e sa khone ho, hobane myocardium atrial tsa ventricles le arohane tswa dinama tse nyenyane tse fibrous, u se ke ua hopotse ka litakatso tsa methapo ea kutlo. Le feela sebakeng sa noute atrioventricular kahoo ha mokoallo hlōloa. Sena se etsa hore ho pulse length tsokoang ho ea batla le tsela ea ho batlang ho karolo ena ea bohlokoa, moo ho na le kabo bona junifomo ho pholletsa le unit trust cardiac.

Cardiac conduction tsamaiso e khopo e boetse e na ka sebopeho sa yona sa sosobaneng ea lekala le literata, tlama atrial le ventricular myocardium, le Purkinje likhoele, e leng theha synapses ka lisele tse kardiomiotsitarnyh be u fane ka interfacing hlokahala a mesifa e honyele le thabo tšohile. Ka liboto tsa lona, le faeba ya data ba ho qetela branching sosobaneng ea lekala le literata, khomaretse ho akira theo gun subendocardial tsa ventricles ba pelo.