![Dab tsi tshwm sim thaum ua qhov kev xav rov ua dua? Dab tsi tshwm sim thaum ua qhov kev xav rov ua dua?](https://i.answers-medical.com/preview/medical-health/14010655-what-happens-during-a-reflex-action-j.webp)
Video: Dab tsi tshwm sim thaum ua qhov kev xav rov ua dua?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Piv txwv li, ib qho yooj yim reflex arc tshwm sim yog tias peb yuam kev kov qee yam kub. Receptor nyob rau hauv daim tawv nqaij pom ib tug stimulus (qhov kev hloov ntawm kub). Sensory neuron xa hluav taws xob impulses mus rau relay neuron, uas nyob rau hauv tus txha caj qaum ntawm CNS. Lub cev muaj zog neuron xa hluav taws xob rau lub zog.
Tib neeg tseem nug, qhov kev txiav txim siab ua haujlwm zoo li cas?
A reflex yog qhov tshuaj tiv thaiv tsis siv neeg rau qhov kev txhawb siab. Kev txhawb siab yog ib yam uas ua rau muaj kev xav kev ua . Hauv qhov yooj yim reflex , neuron nqa cov ntaub ntawv hais txog kev txhawb rau lub hlwb lossis tus txha caj qaum thiab txuas nrog lub cev muaj zog neuron. Lub cev muaj zog neuron xa tawm cov lus rau cov leeg.
Kuj Paub, dab tsi yog qhov tseem ceeb rau theem ntawm kev ua haujlwm reflex? Piv txwv li, ib qho yooj yim reflex arc tshwm sim yog tias peb tsoo ib yam dab tsi kub.
- Receptor nyob rau hauv daim tawv nqaij pom ib tug stimulus (qhov kev hloov ntawm kub).
- Kev hnov qab neurone xa cov kev xav rau kev xa xov neurone.
- Lub cev muaj zog neurone xa impulses rau effector.
- Effector tsim cov lus teb (cov ntawv cog lus nqaij txav mus deb).
Tib neeg kuj nug, dab tsi yog hom reflex ua?
Muaj ob hom reflex arcs: lub autonomic reflex arc, cuam tshuam rau sab hauv nruab nrog cev, thiab somatic reflex arc, cuam tshuam cov leeg. Thaum a reflex arc muaj tsuas yog ob lub neurons, ib qho kev hnov qab neuron, thiab ib lub cev muaj zog neuron, nws tau txhais ua monosynaptic. Monosynaptic hais txog qhov muaj ib qho tshuaj synapse nkaus xwb.
Puas yog kev ua reflex cuam tshuam nrog lub hlwb?
Rov ua dua A reflex kev txiav txim ua raws li ntu ntu no thiab ua tsis koom nrog lub meej mom ib feem ntawm lub lub hlwb , uas ua rau nws nrawm dua. Txoj kev paj hlwb ua raws li a reflex kev txiav txim npe a reflex arc.
Pom zoo:
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