Video: Dab tsi yog qhov ua haujlwm ntawm lub teeb pom kev ntawm cov menyuam yaus?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov pupillary lub teeb reflex (PLR) lossis photopupillary rov ua dua yog a rov ua dua uas tswj txoj kab uas hla ntawm menyuam kawm ntawv , nyob rau hauv teb rau kev siv (luminance) ntawm teeb uas ntog rau ntawm cov qog ntshav liab ntawm cov retina nyob tom qab ntawm lub qhov muag, yog li pab hauv kev hloov pauv ntawm kev pom kev mus rau ntau qib ntawm qhov pom kev/
Tsuas yog li ntawd, dab tsi yog lub teeb pom kev zoo li qub?
Cov rov ua dua yog kev pom zoo: Feem ntau lub teeb uas yog qhia hauv ib lub qhov muag tsim menyuam kawm ntawv constriction ntawm ob lub qhov muag. Kev pom zoo teb yog qhov kev hloov pauv hauv menyuam kawm ntawv qhov loj me nyob rau hauv lub qhov muag rov qab rau lub qhov muag uas tus teeb yog qhia (piv txwv li, yog hais tias tus teeb yog ci rau ntawm qhov muag sab xis, sab laug menyuam kawm ntawv tseem txwv kev pom zoo).
Ib yam nkaus, tus tub kawm ntawv lub luag haujlwm yog dab tsi? Cov iris daim ntawv cog lus thiab nthuav tawm yam tsis xav tau thiab hloov pauv qhov loj ntawm tus tub kawm ntawv. Tag nrho txoj haujlwm ntawm iris thiab cov tub kawm ntawv yog los tswj cov teeb pom kev zoo uas nkag mus rau hauv lub qhov muag. Nws tau hu ua pupillary reflex, thiab tej zaum koj tau pom tias tus neeg cov tub ntxhais kawm tau me dua nyob rau hauv lub teeb ci thiab loj dua hauv lub teeb qis.
Kuj nug, dab tsi ntawm lub hlwb tswj cov menyuam yaus reflex?
Pupillary reflexes yog kho los ntawm IIIrd cranial paj nyob rau theem ntawm superior colliculus. Ib qho qis dua lub hlwb -lub cev nqaij daim tawv ua rau tsis nco qab los ntawm kev puas tsuaj rau cov reticular tsim yuav tsis koom nrog pupillary reflexes , tab sis yog tias txhua yam lub hlwb - qia reflexes tau khaws cia qhov no tsis suav nrog a lub hlwb -qhov txhab.
Koj ua li cas kuaj koj cov menyuam yaus reflex?
Koj tus kws kho mob yuav ua ntej teeb lub teeb, tom qab ntawd hais kom koj saib ib qho khoom nyob deb. Ib lub teeb yuav ci rau koj ob lub qhov muag los ntawm txhua sab. Koj tus kws kho mob yuav saib xyuas koj cov menyuam kom zoo txiav txim siab seb koj tus menyuam puas nyob hauv lus teb mus rau lub teeb, ua kom pom qhov loj thiab cov duab ntawm koj cov menyuam kawm ntawv.
Pom zoo:
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