Ukwakheka Reticular. Ubudlelwane kunye reactions motor

Brainstem reticular Ukwakheka ukuyilwa plexiform, nobuninzi kwezakhiwo zemithambo, ibekwe kwindawo esembindini (thalami, ephakathi kunye Medulla). Luvo ezenza kube phezulu, ayahluka ubukhulu, ubude neurite, isakhiwo. Kugubha aluka yazo ashinyeneyo.

Imisebenzi kwakhiwe reticular

Formation ihlobene kwiCerebellum, umnqonqo, ngumonzakalo kwi zifaka palsy, i ingqondo (ukubonelela abasabela zibalulekileyo emzimbeni) kwinkqubo. Xa ukuyilwa umnatha ukusebenzisana kunyuka (afferent) zisihla (efferent) pulses. Le la nga ujikeleze futhi ivaliwe iziphaluka zemithambo. Kulo mzekelo, ukuphazamiseka rhoqo inikwe luvo ukwakheka reticular kwinqanaba elithile. Isiphumo kukuzimisela ethile imisebenzi yamasebe ezahlukeneyo kwenkqubo luvo. Ukulungisa le iqondo excitation ye umnatha Ukwakheka yenziwa zifaka amaxolo.

ukubunjwa Reticular iquka imimandla esikwaziyo ukunikeza okanye ukuququzelela isiphumo inhibitory kwi ngayo motor spinal.

Ngokuba lixesha lokuqala ubudlelwane phakathi ikhaliphe lomqolo nokukhuthazwa kwiinkalo ezahlukeneyo ukuyilwa enemingxuma ivunjululwe I. M. Sechenovym. Emva koko, lo neurophysiologist Megounom American ngoncedo lwabasebenzi yaqulunqwa ngokucacileyo kokwakhelwa Sechenov.

Ngoko, xa ukuvuselela yombane intsimi medial kwi nkawu anesthetized kunye neekati kukho kumiwe epheleleyo intshukumo, njengokuba reflex, yaye ebangela ukukhuthazwa imimandla lwemoto le neuron. Wagqitywa ke wonke phenomenon zeebreyiki kuphakamisa ukuyilwa reticular, unenzondelelo ukutyabuka, ngaba mazwe ngokwendalo.

Xa baboniswa kummandla ekwakhiweni osisi reticular kwi kwimida, linalo ummandla isiphumo inhibitory elibhaqiweyo ukuququzelela ukusebenza ngomhla umsebenzi motor spinal.

Ukwakheka reticular unako ukusebenza kwezemfundo ezahlukeneyo lialio.

Kufuneka kuqatshelwe ukuba indawo ukuyilwa enemingxuma, enalo isiphumo lula kwi umsebenzi motor oluya anteriorly. Ngenxa yoko, babugubungela kuphela indawo ye Oblongata Medulla, kodwa ke ephakathi kunye Pons.

imfundo Net zingachaphazela kwezihlunu. Oku evulekileyo indawo R. lenyengane. neurophysiologist Swedish wabonisa ukuba ukuyilwa reticular kuchaphazela umsebenzi luvo gamma motor. Kwathi axons zawo kuthiwa-"intrafuzarnym" uYesti kwezihlunu yaye basebenzise indima ebalulekileyo ummiselo kwesigaba na iintshukumo zomzimba babesima.

kwiindawo ezahlukileyo ukuyilwa reticular banokuba nempembelelo emnandi uhlobo nolahlo ngokubanzi le neuron, ukuzibandakanya nayo yonke indawo yayo.

Ukugcina umsebenzi ukusekwa wocingo kunye novakalelo izinto ezahlukahlukeneyo amachiza ajikelezayo igazi ikhutshwa phandle yimiba humoral (carbon dioxide, catecholamines, njl ..). Oku, kunegalelo ukudityaniswa lokusekwa reticular ekumiseleni imisebenzi ethile yawo.

Kufuneka kuqatshelwe ukuba izifundo ukuzalana ukuyilwa enemingxuma kunye nezinye izakhiwo subcortical, Kuvumelekile ukuba ukucokisa iimpawu iindlela neurophysiological ngemvelo ithi ngamnye (iintlungu, uyichitha, ulale, zigcinwayo, ithi ngokwasemoyeni zenkuthazo kunye nabanye). Sebenzisa izifundo Medicine ityhila amayeza ngabanye CNS ezimbi, ukuchaza indlela entsha iingxaki zonyango ezithile.