![Vim li cas qhov dav ntawm qhov sib xyaw ua haujlwm muaj peev xwm nce nrog nce kev txhawb zog? Vim li cas qhov dav ntawm qhov sib xyaw ua haujlwm muaj peev xwm nce nrog nce kev txhawb zog?](https://i.answers-medical.com/preview/medical-health/14028673-why-does-the-amplitude-of-the-compound-action-potential-increase-with-increasing-stimulus-strength-j.webp)
Video: Vim li cas qhov dav ntawm qhov sib xyaw ua haujlwm muaj peev xwm nce nrog nce kev txhawb zog?
![Video: Vim li cas qhov dav ntawm qhov sib xyaw ua haujlwm muaj peev xwm nce nrog nce kev txhawb zog? Video: Vim li cas qhov dav ntawm qhov sib xyaw ua haujlwm muaj peev xwm nce nrog nce kev txhawb zog?](https://i.ytimg.com/vi/MvXbnXzRQCk/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A: CAP yog cov lej lej ntawm txhua tus neeg fiber ntau muaj peev xwm nqis tes ua ntawm cov hlab ntsha. Raws li stimulus zog nce , peb nrhiav ntau fibers, yog li ntau APs ntxiv los tsim lub tswb zoo li nkhaus.
Ib yam li ntawd, vim li cas qhov siab ntawm kev sib xyaw ua haujlwm muaj peev xwm nce nrog kev txhawb zog ntau dua?
Raws li kev txhawb zog ntxiv , ntau thiab ntau ib tus neeg axons zoo siab txog thaum kawg txhua qhov axons hauv cov hlab ntsha zoo siab. Qhov no ua rau lub ncov ntawm compound kev ua kom muaj peev xwm nce raws li tus kheej tus kheej muaj peev xwm nqis tes ua raug tsim tawm.
Tom qab ntawd, lo lus nug yog, yog vim li cas lub amplitude ntawm qhov kev txiav txim muaj peev xwm tsis nce raws li stimulation voltage nce siab tshaj qhov pib? Cov amplitude tsis nce vim tsis muaj teeb meem dab tsi qhov hluav taws xob tau thov, thaum daim nyias nyias nce mus txog qhov pib cov peev xwm ua tseem yuav zoo li qub. Lub membrane peev xwm nruab nrab ntawm axon hillock thiab axon hloov nrog qhov pib vim lub peev xwm tau qhab nia thiab tsis muaj peev xwm ua tau tsim
Tom qab ntawd, ib tus tuaj yeem nug, vim li cas qhov kev txiav txim muaj peev xwm taug qab nce hauv amplitude thaum lub zog stimulus nce?
Txuas ntxiv nce ntxiv qhov siab tshaj qhov pib los ntawm 0.1-0.2 V nce ntxiv. Pom zoo li koj nce cov txhawb zog , cov amplitude ntawm kev ua kom muaj peev xwm nce me ntsis (Daim duab 6.12). Qhov no yog vim qhov lub zog txhawb zog tam sim no muaj zog txaus rau txhua lub paj hlwb hauv cov hlab ntsha kom ua peev xwm ua.
Dab tsi cuam tshuam rau qhov amplitude ntawm qhov muaj peev xwm ua tau?
Cov amplitude ntawm peev xwm ua feem ntau yog nyob ntawm kev nkag los ntawm Na+. Tsis tas li ntawd, qhov kub thiab txias cuam tshuam rau qhov kev txiav txim muaj peev xwm amplitude (Hodgkin & Katz, 1949) thiab qhov sib txawv me ntsis ntawm qhov ntev axons tej zaum yuav yog li ntawd yuav tsum hloov pauv. amplitude . Ib yam nkaus, cov duab yuav hloov ib yam nkaus.
Pom zoo:
Qhov sib txawv ntawm kev txhawb siab rau kev ua haujlwm thiab kev ntxub ntxaug kev ntxub ntxaug yog dab tsi?
![Qhov sib txawv ntawm kev txhawb siab rau kev ua haujlwm thiab kev ntxub ntxaug kev ntxub ntxaug yog dab tsi? Qhov sib txawv ntawm kev txhawb siab rau kev ua haujlwm thiab kev ntxub ntxaug kev ntxub ntxaug yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13816927-what-is-the-difference-between-a-motivating-operation-and-a-discriminative-stimulus-j.webp)
Nco ntsoov tias kev txhawb nqa kev ua haujlwm sib txawv los ntawm kev sib cais kev ntxub ntxaug (Sd). Qhov kev ntxub ntxaug qhia tias muaj kev txhawb nqa ntxiv, thaum lub zog txhawb nqa kev hloov pauv kev ua haujlwm ntawm tus txhawb nqa
Qhov twg ntawm cov hauv qab no yog qhov muaj peev xwm tshwm sim tshwm sim ntawm kev tswj hwm procainamide?
![Qhov twg ntawm cov hauv qab no yog qhov muaj peev xwm tshwm sim tshwm sim ntawm kev tswj hwm procainamide? Qhov twg ntawm cov hauv qab no yog qhov muaj peev xwm tshwm sim tshwm sim ntawm kev tswj hwm procainamide?](https://i.answers-medical.com/preview/medical-health/13860750-which-of-the-following-is-a-potential-side-effect-of-procainamide-administration-j.webp)
Muaj ntau cov kev mob tshwm sim tom qab induction ntawm procainamide. Cov kev tsis zoo no yog ventricular dysrhythmia, bradycardia, hypotension thiab poob siab. Cov kev phom sij tshwm sim ntau dua yog tias cov koob tshuaj txhua hnub tau nce. Procainamide kuj tseem tuaj yeem ua rau kub cev tshuaj thiab lwm yam kev ua xua
Kev sib raug zoo ntawm kev txhawb nqa lub sijhawm thiab kev txhawb zog siab yog dab tsi?
![Kev sib raug zoo ntawm kev txhawb nqa lub sijhawm thiab kev txhawb zog siab yog dab tsi? Kev sib raug zoo ntawm kev txhawb nqa lub sijhawm thiab kev txhawb zog siab yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13877529-what-is-the-relationship-between-stimulus-duration-and-stimulus-amplitude-j.webp)
Kev sib raug zoo ntawm kev txhawb nqa lub sijhawm thiab qhov dav tam sim no Tus nqi yog cov khoom lag luam ntawm qhov dav thiab ntev. Yog li yog tias lub sijhawm ntev ob npaug, koj yuav xav tau tsuas yog ib nrab ntawm qhov tam sim no kom coj daim nyias nyias mus rau qhov pib vim tias qhov me me tam sim no nyob rau qhov kev txhawb zog ntev dua muaj lub sijhawm los them rau daim nyias nyias
Yuav ua li cas thiaj li muaj peev xwm so ntawm cov leeg nqaij sib txawv los ntawm neuron?
![Yuav ua li cas thiaj li muaj peev xwm so ntawm cov leeg nqaij sib txawv los ntawm neuron? Yuav ua li cas thiaj li muaj peev xwm so ntawm cov leeg nqaij sib txawv los ntawm neuron?](https://i.answers-medical.com/preview/medical-health/13885050-how-is-the-resting-membrane-potential-of-a-muscle-fiber-different-from-a-neuron-j.webp)
Lub peev xwm so ntawm daim nyias nyias hauv cov leeg pob txha pob txha zoo ib yam li hauv cov neurons, piv txwv li & rho tawm; 70 txog & rho tawm; 90 mV. Tsis zoo li cov paj hlwb, qhov chaw muaj peev xwm so ntawm lub cev feem ntau yog tshwm sim los ntawm K+ permeability, cov leeg pob txha pob txha ntawm tes ua kom lub cev muaj peev xwm tau txais txiaj ntsig zoo los ntawm Cl & rho tawm; kev coj ua
Cov kab mob sib koom ua ke twg yog tus cwj pwm los ntawm kev sib koom ua ke ntawm kev txav mus los thiab kev sib koom ua ke ntawm qhov hnyav ntawm cov pob qij txha uas feem ntau yog relieved los ntawm so?
![Cov kab mob sib koom ua ke twg yog tus cwj pwm los ntawm kev sib koom ua ke ntawm kev txav mus los thiab kev sib koom ua ke ntawm qhov hnyav ntawm cov pob qij txha uas feem ntau yog relieved los ntawm so? Cov kab mob sib koom ua ke twg yog tus cwj pwm los ntawm kev sib koom ua ke ntawm kev txav mus los thiab kev sib koom ua ke ntawm qhov hnyav ntawm cov pob qij txha uas feem ntau yog relieved los ntawm so?](https://i.answers-medical.com/preview/medical-health/14027937-which-joint-disease-is-characterized-by-joint-stiffness-on-movement-and-joint-pain-of-weight-bearing-joints-that-usually-is-relieved-by-rest-j.webp)
Osteoarthritis feem ntau cuam tshuam rau txhais tes, qis nraub qaum, caj dab, thiab hnyav sib koom tes xws li hauv caug, lub duav, thiab ko taw