Gbasara obi conduction usoro: Ọdịdị, ọrụ na anatomical na n'ahụ atụmatụ

Otu ihe dị mkpa e ji mara ndị na-arụ ọrụ nke obi muscle bụ automatism mbelata. Ọfọn achikota ọrụ nke obi, nke dabeere zipụta ha n'usoro mkpi na-atụrụ nke na muscle anụ ahụ nke atria na ventricles, na-eduzi akwara esi gboo usoro a cellular Ọdịdị na a mgbagwoju anya Ọdịdị.

A conductive usoro nke obi - ihe dị oké mkpa usoro iji hụ na ịrụ ọrụ nke mmadụ, esịnede a usu generator (pacemaker) ma na onye mgbagwoju formations zubere maka innervation infarction cycles. Esịnede a cellular Ọdịdị, nke dabeere ọrụ P-sel T-mkpụrụ ndụ, ọ na-zubere na-ebute na-ahazi obi mkpi nke obi-ulo. The mbụ ụdị mkpụrụ ndụ nwere mkpa n'ahụ ọrụ nke automaton - ikike nke rhythmic contractions enweghị ihe ọ bụla awara awara njikọ na mmetụta nke ọ bụla mpụga stimuli.

T mkpụrụ ndụ, n'aka, nwere a contractile akwadoghị akwado nnyefe ikike eme P-mkpụrụ ndụ na myocardium, nke ana achi achi nsogbu-free ọrụ. N'ihi ya, na-eduzi usoro nke obi, nke dabeere na physiology nke ezigbo mmekọrịta nke abụọ ndị a dị iche iche nke mkpụrụ ndụ, bụ otu ndu usoro a structurally esịne ke gbasara obi unit.

Iduziri mmadụ gbasara obi usoro mejupụtara ọtụtụ ọtọ components: na sinoatrial ọnụ na atrioventricular na ùkwù alaka ngọngọ na n'aka-nri na n'aka ekpe ụkwụ, agwụcha ke Purkinje emep uta eri. Sinoatrial (imi) ọnụ dị na nri atrium, bụ a obere uka nke muscle esiwọrọ elliptical udi. Ọ bụ na nke a akụrụngwa, bụ nke malitere na ịmụrụ usoro nke obi, na-eme akwara esi gboo, na-eme ka contractile Ibọrọ na obi m nile. Automata nkịtị sinoatrial ọnụ na-atụle ga si na iri ise na iri asatọ pulses kwa nkeji.

Atrioventricular akụrụngwa dị n'okpuru endocardium na posterior nke nke interatrial septum, otu ihe dị mkpa ọrụ nke na-egbu oge, nzacha na redistribution nke na-abata pulses eme na zigara sinoatrial ọnụ. Gbasara obi conduction usoro-eme usoro iwu na distributive ọrụ e kenyere ya a bughi akụrụngwa - na atrioventricular ọnụ.

The mkpa maka ndị dị otú ahụ a ọrụ n'ihi na eziokwu na-efegharị efegharị nke akwara esi gboo, kama na-agbasa site na atria usoro na-eme ka ha nzaghachi contractile nzaghachi ozugbo banye n'ime n'ime ventricles nke obi abụghị ike, n'ihi na atrial myocardium nke ventricles iche na fibrous anụ ahụ, ọ bụghị uche nke akwara esi gboo. Na na na mpaghara nke atrioventricular ọnụ ya mere ọ dịghị agaghị emerili mgbochi. Nke a na-akpata na usu-efegharị efegharị na search of a ụzọ nwewa a dị mkpa akụrụngwa, ebe ha edo nkesa ofụri gbasara obi unit.

Gbasara obi conduction usoro nwekwara na ya Ọdịdị a ùkwù alaka ngọngọ, isọ-nsọ atrial na ventricular myocardium, na Purkinje emep uta eri, nke na-etolite synapses on kardiomiotsitarnyh mkpụrụ ndụ na-enye ndị dị mkpa interfacing nke muscle mkpi na ụjọ ha obi ụtọ. Na ya isi, na eriri data na-ikpeazụ branching ùkwù alaka ngọngọ, mmasị ka subendocardial plexus nke ventricles nke obi.