Purkinje ozi ndị dị obi

Obi anyị - a muscle nwere a nnọọ pụrụ iche usoro nke mkpi. Inside na ọ bụ a mgbagwoju usoro nke kpọmkwem sel (pacemakers), nke nwere a multi-larịị ọrụ akara usoro. Ọ bụ ọnụ ọgụgụ nke ntinye na Purkinje emep uta eri. Ha na-emi odude ke ventricular myocardium na-ahụ maka ha synchronous mkpi.

General mmewere nke vaskụla usoro

Gbasara obi conduction usoro a na conventionally kewara n'ime anọ akụkụ site anatomists. Akụkụ mbụ na-enye sinoatrial (sinoatrial) ọnụ. Ọ bụ a Nchikota atọ n'ùkwù n'ùkwù nke mkpụrụ ndụ nke n'ịwa pulses na a ugboro ole nke iri asatọ - otu narị na iri abụọ ugboro kwa nkeji. Nke a na-agba na-enye ohere obi ọnụego ịnọgide na-enwe ezigbo ọbara mgbasa ke idem, saturation na oxygen na metabolic ọnụego.

Ọ bụrụ na n'ihi ihe ụfọdụ mbụ pacemaker ike ịrụ ọrụ ya, ọ na-ewe atrioventricular (atrioventricular) ọnụ. Ọ na-emi odude na ókè-ala nke obi-ulo n'etiti nkebi. Nke a ụyọkọ nke mkpụrụ ndụ bụ ugboro ole ọnụego na nso nke iri isii na iri asatọ na ọrịa strok na a na-ewere a abụọ iji pacemaker.

Na-esonụ larịị nke conduction usoro - ọ bụ na ngugu nke Ya na Purkinje emep uta eri. Ha na-emi odude ke interventricular septum na entwine onu ire nke obi. Nke a na-eme ka o kwe omume na ngwa ngwa kesaa eletriki gboo nke ventricular myocardium. amụba ọsọ dịgasị iche n'ebe iri anọ na iri isii ugboro kwa nkeji.

ọbara esenyịn

Parts nke conduction usoro, nke na-emi odude ke atria, na-enweta nri si dị iche iche na isi mmalite, iche iche site na ike nke myocardium. Sinoatrial ọnụ nyere nri otu ma ọ bụ abụọ obere akwara ndị gara na na-na oké mgbidi nke obi. Mma bụ ọnụnọ nke a disproportionately nnukwu akwara nke na-agabiga n'etiti ọnụ. Nke a alaka nke nri akwara akwara. Ọ, n'aka nke ya, na-enye ọtụtụ nke obere alaka na-etolite a na ok netwọk nke ọbara-venous na mpaghara ebe a atrial anụ ahụ.

Ukwu nke Ya na Purkinje emep uta eri, kwa, na-kwadoro site na alaka nke nri akwara akwara (okoro) ma ọ bụ kpọmkwem site onwe ya. Mgbe ụfọdụ, ọbara nwere ike igba n'ime Ọdịdị si circumflex akwara. E na-kpụrụ a na ok netwọk nke capillaries na-tightly entwine cardiomyocytes.

Sel nke mbụ ụdị

Iche n'etiti mkpụrụ ndụ, nke bụ akụkụ nke conductive usoro, n'ihi na eziokwu na ha nwere dị iche iche ọrụ. E nwere atọ isi ụdị nke mkpụrụ ndụ.

Eduga pacemakers na-N mkpụrụ ndụ ma ọ bụ mkpụrụ ndụ nke mbụ ụdị. Morphologically, ọ bụ a obere muscle mkpụrụ ndụ na a nnukwu ntọala na a ọtụtụ nke ogologo Ome, nwere njikọ chiri anya. Ọtụtụ gbara agbata obi mkpụrụ ndụ na-ewere dị ka a ụyọkọ, n'otu a nkịtị n'okpuru ala akpụkpọ ahụ.

Iji n'ịwa a mkpi na esịtidem ajụ P mkpụrụ ndụ ndokwa n'ùkwù n'ùkwù nke myofibrils. A ọcha ogide dịkarịa ala a ụzọ n'ụzọ anọ nke ngụkọta ohere nke cytoplasm. Ọzọ organelles enweghị usoro na-ewekarị n'ime cell na nta karịa na nkịtị cardiomyocytes. A tube cytoskeleton, ọzọ, na-ndokwa biri ma na-enwe udi nke pacemakers.

Site ndị a na mkpụrụ ndụ ndị mejupụtara sino-atrial ọnụ, ma ndị ọzọ ọcha, gụnyere Purkinje emep uta eri (histology nke ga-kọwara n'okpuru ebe a) nwere a dị iche iche Ọdịdị.

Mkpụrụ ndụ nke abụọ ụdị

Ha na-akpọ mgbanwe ma ọ bụ latent pacemakers. Irregularly ekara, mkpumkpu karịa nkịtị cardiomyocytes, ma a ukwuu ọkpụrụkpụ nabata a abụọ nuclei, na cell mgbidi nwere miri recesses. Organelles na ndị a na mkpụrụ ndụ karịa na cytoplasm nke mkpụrụ ndụ n.

The contractile eri ruo n'ebe ogologo axis nke cell. Ha na-thicker na nwere otutu sarcomeres. Nke a na-enye ohere ha ka ha bụrụ ndị ọkwọ ụgbọala nke abụọ-iji ọnụego. Mkpụrụ ndụ na-mere ndokwa na data atrioventricular ọnụ na ngugu nke Ya na Purkinje emep uta eri ihe nkiri slide na-atọ ụdị mkpụrụ ndụ na-n'ihu.

Mkpụrụ ndụ nke atọ ụdị

Histology mata ọtụtụ ụdị nke mkpụrụ ndụ na ọnụ akụkụ nke gbasara obi conduction usoro. Dị ka nhazi ọkwa nke atọ cell ụdị atụle ebe a ga-enwe a yiri Ọdịdị ndị na-eme ka Purkinje emep uta eri na obi. Ha bụ ihe voluminous karịa ndị ọzọ na pacemakers, ogologo na obosara. Ọkpụrụkpụ dịgasị myofibrils na niile eriri ngalaba, ma ego nke contractile ọcha dị ukwuu karịa na nkịtị cardiomyocytes.

Ugbu a, anyị nwere ike iji tụnyere nke atọ ụdị mkpụrụ ndụ na ndị na-eme ka Purkinje emep uta eri. Histology (nkwadebe enwetara site na anụ ahụ nke obi onu ire) ndị a, ndị dị nnọọ iche. The isi nwere a n'ụzọ akụkụ anọ udi, na contractile eriri mepụtara nnọọ na-adịghị ike, na-enwe ọtụtụ alaka na-interconnected. Ke adianade do, ha na-adịghị anya n'ụzọ doro anya na ogologo nke cell na na-mere ndokwa na ogologo etiti oge. Adịchaghị ego organelles nke na-ndokwa gburugburu myofibrils.

Iche na ugboro nke na site pulses na-agba nke na ha gburu ya, na-achọ a phylogenetically mepere mmekọrịta usoro n'oge usoro nke mbenata n'akụkụ nile nke obi.

Histological iche conduction usoro cardiomyocytes

Mkpụrụ ndụ nke abụọ na nke atọ ụdị nwere a ukwuu ego nke glycogen na ya metabolites karịa nkịtị cardiomyocytes. Nke a na atụmatụ e mere na-enye ezu plastic ikpuchi cell ọrụ na potassium chọrọ. The enzymes maka glycolysis na glycogen njikọ, ihe ndị ọzọ ọrụ na mkpụrụ ndụ nke conduction usoro. Na-arụ ọrụ obi na mkpụrụ ndụ hụrụ ndị na-abụghị ụkpụrụ. N'ihi nke a mma mfe ibelata nnyefe nke oxygen bufee pacemakers, gụnyere Purkinje emep uta eri. Na njikere nke na-eduzi usoro mgbe ọgwụgwọ na ya arụ ọrụ bekee na-egosi elu ọrụ na holineserazoy na lysosomal enzymes.