Video: Neuron zoo li kev sib txuas pom muaj nyob hauv tib neeg cov tawv nqaij hlwb
2024 Tus sau: Seth Attwood | [email protected]. Kawg hloov kho: 2023-12-16 16:06
Tau ntev, nws tau ntseeg tias cov paj hlwb muaj kev sib cuam tshuam hauv ib qho tshwj xeeb, inimitable. Tab sis tam sim no nws tau muab tawm tias cov hlwb ntawm daim tawv nqaij "kev sib txuas lus" nrog ib leeg yuav luag zoo li neurons!
Lub hlwb kev ua haujlwm kos npe yog ib txoj haujlwm nyuaj tab sis kawm tau zoo. Peb paub tias lub hlwb hlwb xa cov ntaub ntawv rau ib leeg los ntawm kev tso tawm cov tshuaj lom neeg tshwj xeeb - neurotransmitters - uas ua kom cov ceg "networks" ntawm dendrites ntawm cov hlwb nyob sib ze. Txawm li cas los xij, cov kws tshawb fawb tau pom tias qhov tshwj xeeb no (raws li kev xav yav dhau los) tus qauv tsis yog tshwj xeeb rau cov paj hlwb.
Cov kws tshawb fawb tau pom tias muaj cov txheej txheem zoo sib xws nyob rau hauv qee qhov xwm txheej tau pom hauv cov hlwb … ntawm daim tawv nqaij. Ib pab neeg ntawm Rockefeller University tau sau tseg txog qhov no los ntawm kev kawm txog kev cuam tshuam ntawm ob hom tawv nqaij sib txawv: melanocytes, uas tsim cov xim ultraviolet-absorbing melanin; thiab keratinocytes, uas ua rau feem ntau ntawm cov epidermis, tiv thaiv lub cev los ntawm ib puag ncig influences, ib feem los ntawm melanin.
Raws li biophysicist Sanford M. Simon, "Keratinocytes twine nyob ib ncig ntawm melanocytes, tsim kev sib txuas ceev uas zoo li cov neurons." Tseeb tiag, qhov pom kev zoo sib xws yog twv yuav raug hu muaj. Nws muab tawm tias cov teeb liab tshuaj lom neeg los ntawm keratinocytes ua rau cov cim hu ua calcium transients hauv melanocyte dendrites. Cov kws tshawb fawb piav qhia tias dendritic morphology ntawm cov txheej txheem sab hauv nws tus kheej tsis yog qhov tshwm sim tsis tshua muaj. Txawm li cas los xij, lawv feem ntau ib txwm cuam tshuam nrog neurons, thaum nyob rau hauv peb cov ntaub ntawv cov hlwb ua nws tus kheej ntawm cov paj hlwb.
Thaj, muaj ntau txoj kev sib txuas lus sib sib zog nqus ntawm cov hlwb ntawm daim tawv nqaij, uas cov kws tshawb fawb tseem tsis tau xav txog. Leej twg paub yog tias lawv yuav tuaj yeem tshawb pom cov qauv zoo sib xws hauv lwm cov ntaub so ntswg ntawm peb lub cev?
Pom zoo:
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