![Dab tsi yog flexor reflex arc? Dab tsi yog flexor reflex arc?](https://i.answers-medical.com/preview/medical-health/14140293-what-is-flexor-reflex-arc-j.webp)
Video: Dab tsi yog flexor reflex arc?
![Video: Dab tsi yog flexor reflex arc? Video: Dab tsi yog flexor reflex arc?](https://i.ytimg.com/vi/wLrhYzdbbpE/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Flexor rov ua dua . Flexor reflexes yog tus txha caj qaum polysynaptic reflexes uas tuaj yeem tsim los ntawm kev tsheb ciav hlau ntawm hluav taws xob stimuli xa mus rau cutaneous los yog cov hlab ntsha sib xyaw. 1. Qhov qub flexor reflex muaj ob yam khoom EMG. Thawj qhov tshwm sim ntawm qhov pib siab dua.
Tib neeg kuj nug, flexor reflex ua li cas?
Cov flexor reflex yog ib polysynaptic rov ua dua uas ua rau flexor nqaij contraction. Los ntawm kev nrhiav neeg ua haujlwm flexor cov leeg hla ntau pob qij txha, cov flexor reflex yog piv txwv ntawm kev sib tshuam rov ua dua uas muaj cov ntaub so ntswg tiv thaiv tus nqi xws li tsim kev tshem tawm sai los ntawm qhov ua rau muaj kev phom sij.
Tsis tas li ntawd, dab tsi tshwm sim thaum lub sij hawm reflex arc? Reflex cov Sensory neuron xa hluav taws xob impulses mus rau relay neuron, uas nyob rau hauv tus txha caj qaum ntawm CNS. Relay neurons txuas cov neurons sensory rau lub cev muaj zog neurons. Lub cev muaj zog neuron xa hluav taws xob rau lub zog. Effector tsim cov lus teb (cov leeg nqaij daim ntawv cog lus kom txav tes tawm).
Tsis tas li ntawd, qhov reflex arc yog dab tsi thiab nws ua haujlwm li cas?
A reflex arc yog ib txoj hauv kev neural uas tswj tau a rov ua dua . Hauv vertebrates, feem ntau cov leeg hlwb ua tsis dhau ncaj qha mus rau hauv lub hlwb, tab sis synapse nyob rau hauv tus txha caj qaum. Qhov no tso cai rau kom nrawm dua rov ua dua ua kom tshwm sim los ntawm activating spinal motor neurons tsis muaj kev ncua ntawm routing signals los ntawm lub hlwb.
Dab tsi reflex stimulates ipsilateral flexors?
Hla- Extensor Reflex Hauv qhov no, cov ipsilateral limb reacts nrog kev tshem tawm rov ua dua ( stimulating flexor leeg thiab inhibiting extensor cov leeg ntawm tib sab), tab sis cov contralateral extensor cov leeg cog lus kom tus neeg muaj peev xwm tsim nyog hloov qhov sib npaug mus rau sab nraud ko taw thaum lub sij hawm rov ua dua.
Pom zoo:
Muaj pes tsawg tus neurons xav tau kom ua tiav Polysynaptic reflex arc?
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Feem ntau cov kev xav rov qab yog polysynaptic (koom nrog ntau dua ob lub paj hlwb) thiab koom nrog kev ua haujlwm ntawm cov leeg hlwb (lossis koom nrog cov neurons) hauv kev koom ua ke nruab nrab. Qee qhov reflexes; Txawm li cas los xij, yog monosynaptic ('onesynapse') thiab tsuas yog koom nrog ob lub paj hlwb, ib qho kev nkag siab thiab lub cev muaj zog
Dab tsi yog keeb kwm thiab ntxig ntawm flexor digitorum Superficialis?
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Lub taub hau radial yog los ntawm ntu ua ntej ntawm lub vojvoog. Flexor digitorum superficialis ntxig rau hauv lub cev ntawm qhov nruab nrab phalanges ntawm plaub tus lej nruab nrab. Qhov kev ua haujlwm ntawm cov leeg no suav nrog kev hloov pauv ntawm qhov sib txuam sib thooj interphalangeal, metacarpophalangeal sib koom, thiab lub dab teg
Dab tsi yog reflex action thiab Arc?
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Kev ua kom rov ua dua tshiab, tseem hu ua kev rov ua dua tshiab, yog qhov tsis tuaj yeem ua haujlwm thiab yuav luag txhua lub sijhawm txav mus los hauv kev teb rau qhov kev txhawb siab. Txoj kev coj los ntawm cov hlab ntsha hauv qhov kev xav tau hu ua reflex arc. Hauv cov tsiaj siab dua, feem ntau cov paj hlwb tsis nkag ncaj qha mus rau hauv lub hlwb, tab sis sib txuas hauv cov leeg txha caj qaum
Puas yog qhov reflex arc ib feem ntawm lub cev tsis muaj zog?
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Muaj ob hom: autonomic reflex arc (cuam tshuam rau sab hauv nruab nrog cev) thiab somatic reflex arc (cuam tshuam rau cov leeg). Autonomic reflexes qee zaum koom nrog tus txha nqaj qaum thiab qee qhov somatic reflexes tau kho dua los ntawm lub hlwb ntau dua li tus txha caj qaum
Muaj pes tsawg lub synapses hla hauv reflex arc?
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Hom kev cuam tshuam no yog qhov ' thim rov qab'reflex thiab yog monosynaptic, lub ntsiab lus tsuas yog ib qho synapsehas yuav tsum tau hla ntawm cov neuron sensory thiab motorneuron