Lub cev siv ntau cov tshuaj hu ua neurotransmitters kom xa tawm ntawm ib lub xov tooj ntawm tes mus rau lwm tus. Ib qho ntawm feem ntau tshaj neurotransmitters nyob rau hauv tib neeg lub cev yog acetylcholine, feem ntau abbreviated ACh. Nws yog nyob rau hauv ob qho tib si hauv lub paj hlwb (CNS) thiab lub peripheral lub paj hlwb (PNS).
Lub npe acetylcholine yog muab los ntawm nws cov qauv.
Nws yog ib hom tshuaj lom neeg ua los ntawm acetic acid thiab choline. Cholinergic synapses yog cov uas muaj kev sib kis tau los ntawm acetylcholine.
Yuav Ua Li Cas Acetylcholine Pom?
Acetylcholine tsis yog tsuas yog cov neeg siv tshuaj tua kab mob feem ntau, tab sis nws kuj yog thawj thawj zaug neurotransmitter uas tau txheeb xyuas tau.
Nws tau pom los ntawm Henry Hallett Dale nyob rau hauv xyoo 1914, thiab nws qhov kev tshwm sim ntawd tau pom zoo los ntawm Otto Loewi. Ob leeg tau txais qhov Nobel Prize nyob rau hauv Physiology / Tshuaj hauv 1936 rau lawv cov kev tshawb pom.
Yuav ua li cas Acetylcholine Functions nyob rau hauv lub cev
Cov leeg
Nyob rau hauv lub cev peripheral lub cev, qhov neurotransmitter no yog ib qho tseem ceeb ntawm kev kho mob lub hlwb thiab ua haujlwm rau cov leeg nqaij. Tsis pub dhau ntawm lub cev muaj zog, acetylcholine tswj cov zauv ntawm cov neeg ua haujlwm ntawm cov ua haujlwm hauv cov leeg hlwb hauv cov kabmob thiab cov kabmob parasmpathetic.
Nyob rau hauv lub cev peripheral lub cev, acetylcholine yog cov neurotransmitter uas xa cov teeb meem ntawm cov leeg hlwb thiab cov nqaij pob txha (skeletal).
Nws ua rau cov neuromuscular junctions thiab tso cai rau cov leeg lub cev muaj zog rau cov leeg mob. Ib qho ntawm cov dej num ntawm acetylcholine yog los nqa cov teeb meem ntawm lub cev cov hlab hlwb mus rau lub cev nqaij daim tawv.
Piv txwv, lub hlwb kuj xa tawm lub teeb liab los txav sab sab xis. Qhov teeb liab yog nqa los ntawm paj hlwb cov hlab ntsha rau cov hlab ntsha neuromuscular.
Lub teeb liab kis tau los ntawm kev sib txig no los ntawm acetylcholine neurotransmitter, ua rau cov lus teb hauv cov ntshais tshwj xeeb tshaj.
Vim hais tias acetylcholin plays lub luag haujlwm tseem ceeb hauv cov leeg mob, cov tshuaj uas cuam tshuam rau cov neurotransmitter no tuaj yeem ua rau ntau theem ntawm kev cuam tshuam lossis cuam tshuam.
Lub hlwb thiab lub hlwb tsis muaj zog
Acetylcholine kuj ua nyob rau ntau qhov chaw hauv lub hauv nruab nrab lub paj hlwb. Hauv CNS, acetylcholine modulates ntawm ntau yam neurons hauv cov cheeb tsam ntawm lub hlwb uas tswj kev paab, arousal, thiab xim. Kev mob nyhav cholinergic txoj hauv kev puas tsuaj hauv CNS tau txuam nrog qhov pib ntawm Alzheimer's disease.
Nyob rau hauv lub hlwb, acetylcholin ua raws li ib tug neuromodulator. Tsis yog pib ua kev sib txuas ntawm kev sib kis ntawm cov neurons, cov neuromodulators ua rau ntau hom neurons thoob plaws hauv lub hlwb. Kuj tseem nyob rau hauv CNS, acetylcholin ua raws li ib feem ntawm qhov system neurotransmitter thiab plays lub luag haujlwm thiab saib xyuas.
Cov tshuaj thiab cov khoom uas cuam tshuam rau acetylcholine muaj peev xwm ua tsis zoo rau lub cev thiab tuaj yeem ua rau tuag. Piv txwv ntawm cov tshuaj muaj xws li qee yam tshuaj tua kab thiab paj yeeb nkab.
Kawm ntxiv txog seb cov neurotransmitters xa, ua kom nrov nrov thiab kho cov teeb meem thoob hauv ntau qhov chaw ntawm lub cev li cas thiab cov kev tuaj yeem tsis zoo hauv cov tshuaj xa tuaj no muaj feem xyuam nrog cov kab mob.
Qhov chaw:
Purves, D., Augustine, GJ, & Fitzpatrick, D., li al., Eds. Neuroscience . Tsib Tsab Ntawv. Sunderland, MA: Sinauer Associates. 2012.
Siegal A. & Sapru HN. Qhov tseem ceeb Neuroscience. Thib Peb. Philadelphia: Lippincott, Williams / Wilkins. 2014.
Thompson, RF Lub hlwb: Lub Neuroscience Primer . New York: Tsim nyog Publishers. 2000.