The akpụkpọ ahụ nwere

Na-ezu ike akpụkpọ ahụ nwere bụ onye na electric nwere (na ngwaahịa), nke na-kpụrụ n'etiti elu elu nke cell akpụkpọ ahụ na n'ime akụkụ nke plasma akpụkpọ ahụ. The n'ime n'akụkụ nke akpụkpọ ahụ ikwu na elu elu mgbe niile nwere a na-adịghị mma ego. N'ihi na onye ọ bụla ụdị cell na-ezu ike nwere bụ n'ụzọ mgbe nile ịdị ukwuu. N'ihi ya, na-ekpo ọkụ-blooded na skeletal muscle emep uta eri na ọ bụ 90 MV, myocardial mkpụrụ ndụ - 80, akwara mkpụrụ ndụ - 60-70. The akpụkpọ ahụ nwere bụ ugbu a na ihe niile dị ndụ.

Dị na oge a na ozizi atụle eletriki ọkọnọ na-guzobere n'ihi nke nọ n'ọrụ na n'ezinụlọ ije nke ion.

N'ezinụlọ ngagharị emee tinyere ịta grajentị adịghị achọ ike itinye ihe na ya. Cell akpụkpọ ahụ na-ezu ike na ọnọdụ nwere a ukwuu permeability ka potassium ion. Na cytoplasm nke akwara na muscle mkpụrụ ndụ ha (potassium ion) ugbu a na nke iri atọ na ọgu abua na iri ugboro ukwuu karịa na intercellular ọmụmụ. The cytoplasm ion nọ free ụdị na diffused dị ka a ịta grajentị, n'ime extracellular ọmụmụ gafee akpụkpọ ahụ. The interstitial ọmụmụ intracellular anions na-edebe na elu elu nke akpụkpọ ahụ.

Na intracellular ohere nwere tumadi anions pyruvic, acetic, aspartic acid ndị ọzọ organic asịd. The inorganic acid a dị na a dịtụ obere ego. Anions ijupụta site akpụkpọ ahụ ike. Ha anọ na onu. Anions odude ke n'ime akụkụ nke akpụkpọ ahụ.

N'ihi na eziokwu na-adịghị mma-elekọta anions na cations si - mma, na elu elu nke akpụkpọ ahụ nwere a mma ụgwọ, na esịtidem - adịghị mma.

Na extracellular ọmụmụ sodium ion na asatọ ka ugboro iri karịa a onu. Ha permeability bụ ala. Otú ọ dị, n'ihi na penetration nke sodium ion ruo n'ókè ụfọdụ belata akpụkpọ ahụ nwere. Mgbe nke a emee na mgbasa nke chlorine ion n'ime cell. Ọdịnaya nke ndị a ion na iri na ise na orú na iri ugboro elu karịa na extracellular oke mmiri. akpụkpọ ahụ nwere na-abawanye ubé ruru ha penetration. Ke adianade do, e nwere a akpụkpọ ahụ na a pụrụ iche molekụla usoro. Ọ na-enye n'ọrụ nkwalite potassium na sodium ion na ntụziaka nke ụba ịta. N'ihi ya, ọ na-akwado ionic asymmetry.

N'ọrụ ije nke ion bụ a n'ihi ọrụ nke sodium-potassium "mgbapụta" (mgbapụta). Active Ndahie nke sodium ion, n'ihi na penetration nke mkpụrụ ndụ n'ime cell a potassium ion. Na sọrọ mgbapụta gwongworo rụrụ vector nke, n'aka, ebu site ire ere nke metabolic ike nke ATP. Site ume molekul ATP hydrolysis 2 potassium ion banye n'ime sel, na 3 sodium ion na-ebu ya.

Ezumike, na muscle emep uta eri iji hụ na ịrụ ọrụ nke ion nfuli na-nọrọ ruo iri abụọ na pasent nke cellular ike.

N'okpuru nduzi nke ATPase enzyme cleaves ATP. Nsi akwara ozi cyanide monoyodatsetatom, dinitrophenol, na ndị ọzọ bekee, tinyere na-akwụsị Filiks nke glycolysis na ATP njikọ, ọ na-akpalite (ATP) Mbelata na cytoplasm na nchupu ọrụ, "mgbapụta".

The akpụkpọ ahụ kwa, a na permeable na chloride ion (akpan akpan muscle emep uta eri). Na mkpụrụ ndụ na-elu permeability, potassium ion na chlorine dokwara etolite a akpụkpọ ahụ na-ezu ike. N'ihi ya na ndị ọzọ onyinye nke ikpeazụ cell na kwuru usoro bụ negligible.