Yuav ua li cas tshwm sim yog tias koj txham nrog koj ob lub qhov muag qhib? kev tshawb fawb zaum

Qhov no qhov teeb meem yog heev xav tsis tau tsuas yog nyob rau hauv peb, tab sis ua ntej ntawm tag nrho cov zaum uas xav mus nrhiav seb yog dab tsi tshwm sim yog tias koj txham nrog koj ob lub qhov muag qhib. Kiag li txhua txhua nyob tus neeg ntawm no ntiaj chaw tej zaum kuj txham, tab sis ob peb tug rau peb paub yog vim li cas peb kaw peb lub qhov muag thiab yuav ua li cas yog tias txham qhib. Peb pib nrog cov txheej txheem ntawm txham, uas tej zaum yuav hu ua tus tiv thaiv mechanism ntawm peb ua pa system. Thaum ib tug neeg txham, muaj yog ib tug ncaj voos ntawm cov trigeminal paj, coj ib tug ncaj qha ib feem nyob rau hauv tus txheej txheem ntawm innervation ntawm peb ob lub qhov muag. Yog hais tias lub paj yog thaum so, uas peb lub qhov muag yuav qhib, tab sis yog hais tias nws yog tus slightest voos, seb peb nyiam nws los yog tsis, ob lub qhov muag kaw reflexively. Yog li ntawd, muaj ib tug mas lo lus nug: yuav ua li cas yog hais tias tus txham nrog koj ob lub qhov muag qhib? Tag nrho cov tov dag nyob rau hauv ib tug neeg kho tshuab cov txheej txheem. Thiab xws li ib cov tshuaj tiv thaiv ntawm lub cev muaj peev xwm yuav hais tau kom pov hwm peb. Nyob rau hauv kev txiav txim zoo?

ib tug elusive lub hom phiaj

Yog hais tias txawm rau ib lub caij mus xav txog tej yam lub siab thiab ceev ntawm huab cua exhaled los ntawm peb, ces cov nqe lus nug ntawm yog dab tsi tshwm sim yog tias koj txham nrog koj ob lub qhov muag qhib, tsis tshwm sim. Ceev ntawm ze li ntawm 150 km ntawm ib teev! Thiab peb ob lub qhov muag muaj peev xwm tsuas tsis hais ntxiv heev npaum li cas siab thiab, raws li lawv hais tias, "ya" tawm ntawm lawv nyob! Qhov tseeb yog, ntawm chav kawm, ntawm cov tsi science ntawv tseeb, tab sis nws muaj nws cov kev tshab txhais txog. Nyob rau hauv cov ntaub ntawv no, muaj ib txwm kiv cua ntawm lub thwmsim thiab xav ua nyob rau hauv lawv tus kheej daim tawv nqaij, uas yog, yog hais tias tus txham nrog koj ob lub qhov muag qhib. Tab sis ntawm no yog ib tug poser - ua rau nws tsis tshua muaj neeg yooj yim. Raws li zaum, lawv qhov muag qhib yuav txham, tab sis nws yuav coj mus rau consciously siv lub central lub paj hlwb. Thiab nws yog heev ob peb cov neeg tau. Txij li thaum cov tseem ceeb heev rau lub sijhawm nyuaj mus cuag, zaum muab rau pem hauv ntej ib tug xov tooj ntawm ntxiv yog vim li cas yog vim li cas hais tias thaum koj txham peb kaw peb lub qhov muag. Paub nyuaj npaum li cas peb yuav ncaav, thiab paub txog rau dab tsi lub hom phiaj yog cov mechanisms, peb yuav tsis muaj lawm cia peb xav txog dab tsi yuav tshwm sim yog hais tias tus txham nrog koj ob lub qhov muag qhib, thiab yuav tsum zoo siab tias txhua yam tshwm sim raws li nws yuav tsum.

Lub kaw yog thaum muaj hnub nyoog

Yuav kom txham nrog koj ob lub qhov muag qhib yog heev yooj yim, vim hais tias peb qhov ntswg mucosa, ceev ceev, daim di muag, thiab lacrimal qog kom huv si imbued nrog trigeminal paj thiab nws cov txoj. Yog hais tias cov ntaub ntawv yog tus kawg ntawm lub khaus, lub hauv paus chiv keeb ntawm tag nrho cov tsis tuaj yeem tshua xws li blinking los yog txham. Tag nrho cov Pib ntsais koj teeb los sib nyob rau ntawm ib qhov chaw - yog lub medulla oblongata. Tus so ntawm lub chaw zov me nyuam lub luag hauj lwm rau lub txham thiab kaw ntawm lub muag daj, muaj nyob ze. Yog hais tias ib tug nruab nrab, xws li txham yog tus pog, nws yog txiav tshuab txais thiab nyob ze, nyob rau hauv lub kaw ntawm lub tawv muag. Qhov no qhia rau peb cov tshuaj tiv thaiv: txham, peb pib involuntarily zazhmurivat ob lub qhov muag. Ib tug zoo xws li cov txheej txheem underlies lub mechanism ntawm photic txham reflex. Yog hais tias peb yog ib tug ci ntsa iab nkag mus rau lub qhov muag, peb tsis txhob cia li kaw lawv, tiam sis yeej tseem pib ib tsis txham. Raws li koj tau pom, txham - nws yog ib tug heev thiab nthuav mechanism.