Electrical synapses uye mamiriro avo

Synapses vari specialized dzichipfekeka vaaizivana, izvo akaronga pakati masero kukakavara. Ivo zvinoparadzira hwochinja siyana anonongedzera. Synapses kuonekwa muchimiro thickenings mativi etsinga fibers. Uchibatsirwa wavo tsinga nomunhu hunopararira kune muvakidzani masero. The chikuru kushanda synapse chinhu intercellular hutachiwana tsinga nomunhu.

Kupatsanura uye tsanangudzo pfupi

Maererano mhando pulses kuripo hwakakanyiwa, zvemakemikari uye zvemagetsi synapses. Chemical anoitisa chiratidzo hutachiwana mune rimwe divi uye anotowedzera kumukomborera, uyewo depolarize postsynaptic hyperpolarizes kana denderedzwa. Achibatsirwa namakemikari synapses kunowedzera plasticity mu zvichikurukura, kureva, munhu kuvandudza ndangariro uye kumhanya kudzidza. The zvemagetsi hutachiwana is synaptic kunonoka, uye chiratidzo rinoitwa nenzira mbiri. kupomba kutapukirwa iri vasingatungamirirwi migumisiro presynaptic membrane. Uyezve, nemagetsi synapses husingakwanisi yakaderera tembiricha uyewo vamwe kukanganisa kuchitoro chemishonga. yakavhenganiswa mhando synapses vane chimwe chinhu. Ndivo akaererana zvemakemikari uye magetsi zvichikurukura.

Chii chinonzi yemagetsi synapse?

Electrical synapses - iri intercellular inotungamirwa kuburikidza iyo kunovimbisa kwemashoko excitation kufamba kweropa. Izvi kunoitika nokuda chimiro magetsi pakati madhipatimendi maviri anonzi presynaptic uye postsynaptic. Tsinga pamusoro invertebrates ane vakawanda magetsi synapses, apo mune mhuka vari dzinenge ikoko. Pamwe magetsi synapses chaizvo muvanhu nemhuka yepamusorosoro. Kazhinji, vari mwoyo, chitaka, tsandanyama, uyewo vari epithelium uye glandular tishu. Synaptic akatsemuka pakati nemagetsi synapses ari maduku zvikuru pane makemikari. Chinokosha ichi mhando synapse ndechokuti pakati chi- uye postsynaptic membranes dziripo bhiriji mapuroteni mamorekuru.

Rinokosha zvemagetsi synapses basa mhando

Properties ose nemagetsi synapses ndeinotevera:

• Kutsanya chiito (zvikuru mukuru basa kwemakemikari mhando synapses);
• vaneta zvisaririra Migumisiro (summation pamusoro anotevedzana pulses chepakarepo hapana);
• rakavimbika kupararira excitation;
• mukuru ductility;
• kutamira mumwe uye mativi.

Zvakakurukurwa chacho

Sechivako magetsi chido kunotanga postsynaptic membrane. Next rakamanikana synaptic akatsemuka, chine transverse tubules rinoumbwa mapuroteni mamorekuru. Zvinokonzera mutswe iri presynaptic membrane. Pakati chinhu semicircular synaptic Dombo. Oblong synaptic nemagumo - wokupedzisira chinhu sechivako yemagetsi synapse. Nokuda kuvapo mapuroteni mamorekuru mugero pakati masero chi- uye postsynaptic, inorganic ions uye duku mamorekuru vanokwanisa kufamba kubva muchitokisi chimwe. synapse kwakadaro ane pasi kwazvo magetsi nemishonga. Under izvi ezvinhu, magetsi rinoshandisirwa presynaptic postsynaptic masero uye akapotsa kuzodzimwa.

Nyatsonanga dzichipfekeka ehupfumi

In magetsi synapses, pane vakawanda nemamwe dzichipfekeka zvinhu. Synaptic kunonoka kusvika hapana. Zvairatidza anopinda presynaptic chinouraya, uye ipapo muitiro rinotanga pakarepo postsynaptic zvinogona. The penguva pakati zviito izvi chinoshayikwa. Electrical synapses zvinopa yedzimudzangara hadzichatori chete - kubva excitation. In kwakadai synapse wakabata bilateral pasinei nokuti nokuda hunhu stereometric anoitisa imwe nhungamiro dzakawanda zvakanaka. Various zvinhu (pharmacological, chafariz, etc.) vane chinenge hapana zvainoita synapses electric mhando.

Sei mufaro mune magetsi synapses? The muitiro Matanho

Kuitisa munda (PD) - basa guru iro rinobvisa magetsi synapse. The mashandiro uyu muitiro rakafanana PDP mu synapses mune tsinga fibers. Kana excitation Minamato haipindurwe kuita budiriro danho, kuchinja mhosva inotanga presynaptic membrane. Somugumisiro, magetsi, izvo kunokanganisa postsynaptic Kamudzira, muchishungurudza nayo uye chinoita kuti vaunze PD. Conduction kuti excitation mune zvemagetsi synapse chinhu chisinganzwisisiki vasiri kwacho kuti kunoitika mumatanho dzakawanda. Presynaptic Kamudzira anoita Kushandurwa yemagetsi kupomba kuti makemikari, iyo kutanga postsynaptic ndiro zvakare wakavhomorwa kuva zvemagetsi chiratidzo.

Vamwe kuremara ari magetsi synapses

Pasinei chokwadi kuti magetsi synapses aite rimwe kumbonyanya nyore nedanho excitation kuchinjirwa, vane zvimwe zvikanganiso makuru. Uye kupomera kufanana nevechiduku yezviito zvavo. Mukana zvakananga kuchinjirwa kune kure masero mafaro ikoko. masero chi- uye postsynaptic chokuita synapses yemagetsi mhando, vari nguva dzose zvakafanana excitation. braking pakuonekwa hazviiti. Somugumisiro pamusoro zvose kwokusakwana kwakabva muuropi mucheche haisi yakawanda magetsi synapses, nepo muna akura vari wandei ari the retina weziso, uropi hunde nemidzi yacho vestibular midziyo.

A yakafanana, asi ari muchimiro pathological mashandiro ose excitation ndiwo mugumisiro zvirwere zviri chokuita degeneration pamusoro axon miganhu. Somugumisiro, excitation muitiro "akasvetuka" kubvira mumwe axon, izvo zvingaita kuti chishamiso venhema. Somuenzaniso, pakuonekwa kutekenyedzwa kurwadziwa, pasinei kusiya peripheral marwadzo receptors kunogona kuitika nemhaka "mazambiringa" excitation.