Unit Motor - waa maxay?

Motor ama unit motor waa koox macdantaa kuwaas oo innervated by motoneuron ah. Inta ay fiiloyin ka tirsan qaybta la mid ah, kala duwanaan karaan ku xiran tahay shaqo ee muruqyada. Dhaqdhaqaaqa yar waxa uu siiyaa, yar unit motor iyo dadaal yar waa lagama maarmaan u ah in ay excitation.

unugyada Motor, ay kala soocidda.

In daraasadda of this topic u tahay fursad muhiim ah. Ma habka ay unit kasta oo sida baabuurta oo lagu garan karo. Physiology sida sayniska, tilmaamaysaa laba shuruudood:

• hoos xawaaraha jawaab u signal burburiyaha ah;
• xawaaraha daal.

Iyadoo la raacayo, ku salaysan tilmaamayaasha kuwan, saddex nooc oo halbeeg motor lagu kala sooci karaa.

1. Si tartiib ah, oo aan daal. neurons ay motor ku jira wax badan oo myoglobin, taas oo uu leeyahay xidhiidh buuna sare oo ogsijiin. Muruqyada ku jira wax badan oo neurons motor gaabis ah waxaa loo yaqaan cas sababta oo ah midab gaar ah. Waxaa loo baahan yahay inay lahaadaan qaab aadanaha oo xajiya oo Miisaaman.
2. Quick, taayirada. muruqyada Kuwani waa inay awoodaan si ay u qabtaan tiro badan oo la dhimay muddo gaaban. Dunta iyaga ku badan tahay ee wax tamarta kaas oo macneheedu yahay phosphorylation oxidative waxaa laga heli karaa taagoo of ATP.
3. Fast, adkaysi u daal. Dunta waxa ku jira mitochondria yar, iyo ATP sameeyey by cholesterol ee u taagoo glucose. muruqyada waxaa lagu magacaabaa cad sababtoo ah ma laha myoglobin.

The cutub oo nooca ugu horeysay ee

unit The propulsion nooca ugu horeysay ama neutomlyaemaya gaabis ah, waxay badanaa ka dhacdaa muruqyada waaweyn. motoneurons noocan oo kale ah waxay leeyihiin marinka a excitation hoose iyo xawaaraha Suu dareemayaasha. farac unugyada neerfaha dhexe ee qayb terminal ay waxaa jahaysteen iyo fiber yar innervates group. Inta jeer ee siideeyn soo socda in unugyada motor gaabis ah - laga bilaabo lix ilaa toban karsado per labaad. Motoneuron taageeri kara laxanka noocan oo kale ah dhowr tobanaan daqiiqo gudahood.

Power iyo xawaaraha yaraynta unugyada motor of nooca ugu horeysay iyo badh jeer ka yar noocyada kale ee unugyada motor. Sababta tani - heerka u hooseeya ee ATP iyo soo saarka tartiib ah u udhigo calcium in xuub gacanta dibadda ah, waayo, ku qabanaya in troponin.

The cutub oo nooca labaad

unit The propulsion noocan ah ayaa ah motor-neurone ballaaran leh a Axon qaro weyn oo dheer in innervate farabadan weyn macdantaa muruqa. unugyada dareenka waxay leeyihiin marinka ugu sareeya ee excitation iyo xawaaraha sare ee dhaqdhaqaaqa dareemayaasha.

At danab ugu badan ee muruqyada, dareemeyaasha inta jeer garaaca wadnaha noqon kartaa ilaa konton ilbiriqsi. Laakiin motoneuron ma awoodo si ay u ilaaliyaan ah xawaare tabinta muddo dheer si dhakhso ah daalan. Xoogga iyo heerka of hoos ku fiiloyin muruqa ah nooca labaad ka badan hal hore, tan iyo xaddiga myofibrils dhexdeeda dheeraad ah. Dunta waxa ku jiri ensaymes badan oo dumin glucose laakiin weelashii myoglobin protein iyo dhiig yar mitochondrial.

Units of nooca saddexaad

unit The propulsion nooca saddexaad waa si degdeg ah, laakiin adkaysi u daal fiiloyin muruqa. Sida laga soo xigtay dabeecadihiisa waa in ay qaataan qiimaha dhexe dhexeeya nooca hore iyo unugyada motor labaad. Dunta muruqa muruqyada xoog leh, si degdeg ah oo adag. Waayo, wax soo saarka tamarta u isticmaali kartaa hab laylinta iyo anaerobic labadaba.

Ratio macdantaa degdeg ah oo gaabis ah waa hiddo go'an iyo kala duwanaan karaan dad kala duwan. Taasi waa sababta qof ku fiican dheer-orodka, qof si fudud guulaysta ee orodka boqol oo mitir, iyo Culays dheeraad ah oo ku haboon qof.

Reflex in xiisadda iyo pool neuron motor ka

Marka iskala fiber muruqa kasta hakin ugu horeysay in ay ka jawaabaan. neurons ay dhalin siideeyn ilaa toban karsado per labaad. Haddii muruqa in ay sii wadaan si ay u fidin, inta jeer ee wadnaha ahbaa kordhin doonaa ilaa tan iyo konton. Tani waxay keeni doontaa in la yareeyo unugyada motor of nooca saddexaad, iyo in la kordhiyo xoog muruqa uducaynaya. Marka dheeraad ah iskala xirmaan fiiloyin motor of nooca labaad. Tani waxay u tarmin doonaa muruqyada xoogga dib afar ama shan jeer.

unit The propulsion ee muruqa gacanta neurons motor. set A of unugyada dareenka uu ka samaysan yahay muruqa ah, loo yaqaan pool neuron motor. In mid ka mid pool noqon kartaa isku mar ka neurons kala duwan, qaab oo tayo iyo tiroba, unugyada motor. Taas darteed, qaybo ka mid ah macdantaa muruqa ka mid ah shaqooyinka mar oo ilaa xad in u kordhiyaa xiisadda iyo xawaaraha falalkooda dareemayaasha.

"Mabda'a qiimaha"

unit The propulsion muruqyada, waxay ku xiran tahay nooca ay, waa la dhimay oo keliya marka load a marinka qaarkood. excitation Habka unugyada motor ekaansho: neurons dhaqdhaqaaqiisa wanaagsanyahay marka hore la dhimay, falalkooda dareemayaasha waxaa ka dibna si tartiib tartiib ah u hesho in badan oo. Tani hannaanka dhexe ee qarnigii labaatanaad arkay Edvud Henneman. Waxa uu ku magacaabay "mabda'a qiyamka."

Brown iyo Bronk qarnigii badh ka hor lagu daabacay shuqulladoodu on daraasadda of mabda'a ah ee hawlgalka ee noocyada kala duwan ee unugyada muruqa ah. Waxay ku soo jeediyay in ay jiraan laba siyaabood si loo xakameeyo xanuunka foosha ku macdantaa muruqa. The ugu horeysay oo ka mid ah - waa in la kordhiyo inta jeer ee falalkooda dareemayaasha oo kale ah - in ay galaan geedi socodka sida ugu badan ee suurto gal ah tirada neurons motor.