Zoo vs Negative Feedback Loops
Cov lus tawm tswv yim zoo thiab tsis zoo yog tswj hwm los ntawm cov txheej txheem tawm tswv yim uas koom nrog hauv kev tswj hwm lub xeev ntawm homeostasis ntawm vertebrates. Homeostasis yog lub npe hu ua dynamic constancy ntawm lub internal ib puag ncig ntawm ib tug tsiaj. Muaj ob txoj hauv kev yooj yim uas tau koom nrog hauv kev tswj xyuas qhov kev ua haujlwm tsis tu ncua; lawv yog Negative feedback mechanism thiab Positive feedback mechanism. Ntawm no, yog tias cov xwm txheej sib txawv los ntawm tus nqi uas tau teev tseg lossis qhov taw qhia, cov tshuaj biochemical tau pib kom tau txais cov xwm txheej rov qab mus rau qhov teeb tsa.
Cov lus qhia zoo yog dab tsi?
Cov lus qhia zoo tau koom nrog hauv qee kis, hauv lub cev vertebrate. Lawv pib accentuate ib qho kev hloov pauv, uas thaum kawg tsav tus nqi ntawm kev tswj hwm qhov sib txawv txawm tias ntxiv los ntawm qhov teeb tsa. Raws li qhov tshwm sim, cov lus pom zoo qee zaum ua rau lub cev tsis ruaj khov, hauv lub cev. Txawm hais tias cov txheej txheem no tsis ruaj khov, lawv tuaj yeem yog cov khoom tseem ceeb ntawm qee cov txheej txheem physiological. Piv txwv li, cov tswv yim zoo loops ua lub luag haujlwm tseem ceeb hauv cov ntshav txhaws thiab kev cog lus ntawm lub tsev menyuam thaum yug menyuam. Nyob rau hauv cov ntaub ntawv ntawm cov ntshav txhaws, ib qho ua kom muaj zog ua rau lwm qhov hauv ib qho cascade uas thaum kawg ua kom cov ntshav txhaws thaum lub tsev me nyuam hauv plab, txhua qhov contraction stimulates ntxiv stretching, li no txhim kho cov contractions thiab stretching ntawm lub tsev menyuam mus txog rau thaum nws expels lub fetus thaum lub sij hawm lub sij hawm. kev yug me nyuam.
Cov lus teb tsis zoo yog dab tsi?
Cov lus tawm tswv yim tsis zoo feem ntau khaws cov kev sib txawv hauv qhov sib txawv kom tswj tau qhov homeostasis. Hauv kev tawm tswv yim tsis zoo, cov sensors tshwj xeeb tau koom nrog txhawm rau txheeb xyuas cov kev hloov pauv thiab cov xwm txheej hauv lub cev nrog rau sab nraud. Cov sensors tuaj yeem yog cov hlwb tshwj xeeb lossis cov membrane receptors. Cov kev tawm tswv yim tsis zoo muaj feem cuam tshuam rau kev tswj lub cev kub, ntshav qabzib concentration, electrolyte (ion) concentration, nro ntawm cov leeg thiab lwm yam. Thaum muaj qhov sib txawv ntawm qhov sib txawv, qhov chaw sib koom ua ke pib lub teeb liab, uas nyob rau hauv lem nce lossis txo qhov kev ua ntawm ib qho kev sib txawv. lub hom phiaj tshwj xeeb kom tau txais qhov hloov pauv rov qab mus rau qhov teeb tsa. Cov neeg muaj feem cuam tshuam nrog kev tawm tswv yim tsis zoo feem ntau yog cov leeg nqaij lossis cov qog thiab cov chaw sib koom ua ke feem ntau yog ib cheeb tsam ntawm lub hlwb lossis qaum qaum.
Dab tsi yog qhov txawv ntawm Cov Lus Qhia Zoo thiab Tsis Zoo?
• Cov lus tawm tswv yim tsis zoo yog siv ntau dua li cov lus pom zoo.
• Cov lus tawm tswv yim tsis zoo muaj feem cuam tshuam los kho qhov sib txawv ntawm qhov kub thiab txias, pH thiab ntau qhov sib txawv sab hauv, qhov kev tawm tswv yim zoo tau koom tes los tswj cov kev hloov pauv tshwj xeeb.
• Cov lus tawm tswv yim tsis zoo cuam tshuam nrog kev tswj hwm lub cev kub, pH, ion concentration thiab lwm yam, qhov kev tawm tswv yim zoo muaj xws li ntshav txhaws thiab mob hauv tsev menyuam, thaum yug menyuam.
• Cov lus tawm tswv yim tsis zoo ib txwm pab tswj hwm homeostasis, qhov kev tawm tswv yim zoo feem ntau ua rau lub cev tsis muaj zog hauv lub cev; yog li tsis txhob pab tswj kev noj qab haus huv ntau zaus.
