Qhov sib txawv tseem ceeb ntawm cov paj hlwb dawb thiab cov hlab ntsha hauv cov hlab ntsha yog cov paj hlwb dawb tsis muaj cov qauv kev hnov lus zoo thaum lub paj hlwb encapsulated muaj ib qho txhuam ciam teb los yog cov hnab ntim dej ntawm qhov kawg.
Nerve endings ua lub luag haujlwm tseem ceeb hauv kev xa cov paj hlwb. Qhov tseem ceeb tshaj, lawv yog receptors. Mechanoreceptors muaj cov paj hlwb dawb los yog cov paj hlwb encapsulated rau lawv cov paj hlwb impulse. Txawm li cas los xij, muaj qhov sib txawv ntawm cov paj hlwb dawb thiab cov paj hlwb encapsulated nyob rau hauv cov nqe lus ntawm lawv rhiab heev, tshwj xeeb thiab adaptability.
Dab tsi yog Kev Ntshai Nruag Nruas?
Cov paj hlwb dawb yog cov paj hlwb uas tsis muaj cov qauv kev xav. Tsis tas li ntawd, lawv yog encapsulated dawb paj ntaub xaus. Lawv feem ntau tshwm sim hauv daim tawv nqaij thiab txuas mus rau nruab nrab ntawm qhov epidermis. Lub rhiab heev ntawm cov hlab ntsha dawb xaus yog qhov siab nyob rau hauv kev sib piv rau cov hlab ntsha uas npog qhov xaus. Yog li, lawv yog rhiab heev rau qhov mob, kub, siab, ncab thiab kov. Txawm li cas los xij, thaum muaj kev hloov pauv sai sai, cov paj hlwb dawb yuav tsum tau siv sijhawm ntxiv rau kev hloov pauv.
Daim duab 01: Nerve Ending
Ntawm cov sib txawv mechanoreceptors pom hauv daim tawv nqaij, Merkel cov disks muaj cov paj hlwb dawb. Lawv yog densely faib nyob rau hauv lub ntsis ntiv tes thiab daim di ncauj. Ntxiv mus, lawv teb rau lub teeb kov.
Dab tsi yog Encapsulated Nerve Endings?
Nyob rau hauv qhov sib piv rau cov paj hlwb dawb, cov paj hlwb encapsulated tsis muaj qhov qhib kawg rau paj hlwb. Yog li ntawd, qhov rhiab heev ntawm cov hlab ntsha encapsulated yog qhov tsawg hauv kev sib piv rau cov paj hlwb dawb. Qee cov mechanoreceptors muaj cov hlab ntsha hauv cov hlab ntsha. Encapsulated paj ntaub xaus muaj txhuam ciam teb uas ua rau kom qhov tshwj xeeb ntawm cov hlab ntsha impulse kis tau tus mob. Lawv kuj tuaj yeem yog cov hnab ntim dej uas tuaj yeem tsim cov hnab ntim khoom.
Daim duab 02: Dawb Nerve Endings vs Encapsulated Nerve Endings
Ruffini xaus thiab Meissner lub cev nqaij daim tawv yog mechanoreceptors uas muaj cov paj hlwb encapsulated. Ruffini endings muaj kev hloov pauv tsawg uas tuaj yeem kuaj xyuas qhov ncab thiab deformations ntawm daim tawv nqaij thiab pob qij txha. Lawv yog ib qho tseem ceeb hauv kev muab tuav rau ntiv tes thiab txav mus.
Meissner's corpuscles kuj tseem muaj cov hlab ntsha tawg. Lawv feem ntau muaj nyob rau hauv lub Upper dermis. Txawm li cas los xij, lawv txuas mus rau lub epidermis thiab. Lawv yog cov tseem ceeb hauv kev teb rau stimuli, xws li kov thiab siab. Txawm hais tias lawv teb qeeb, lawv qhov tshwj xeeb yog siab.
Dab tsi yog qhov zoo sib xws ntawm Nerve Endings thiab Encapsulated Nerve Endings?
- Ob qho tib si pub dawb cov hlab ntsha thiab cov hlab ntsha encapsulated xa cov hlab ntsha impulses.
- Lawv tsim mechanoreceptors hauv daim tawv nqaij.
- Ob leeg yog rhiab rau txhua yam stimuli.
Dab tsi yog qhov txawv ntawm Dawb Nerve Endings thiab Encapsulated?
Qhov sib txawv tseem ceeb ntawm cov paj hlwb dawb thiab cov paj hlwb encapsulated yog nyob ntawm qhov muaj lossis tsis muaj lub encapsulation. Yog li, cov paj hlwb dawb tsis muaj encapsulation thaum lub paj hlwb encapsulated muaj ib qho txhuam ciam teb encapsulation los yog cov kua dej puv rau ntawm qhov kawg. Tsis tas li ntawd, muaj qhov sib txawv ntawm cov paj hlwb dawb thiab cov paj hlwb encapsulated nyob rau hauv cov nqe lus ntawm lawv rhiab heev, tshwj xeeb thiab adaptability.
Summary – Free Nerve Endings vs Encapsulated
Nerve endings ua raws li receptors rau tau txais cov cim. Nerve endings tuaj yeem pub dawb los yog encapsulated. Cov hlab ntsha pub dawb tsis muaj qhov encapsulation thaum lub paj hlwb encapsulated muaj txhuam ciam teb encapsulation lossis cov kua dej puv rau ntawm qhov kawg. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov paj hlwb dawb thiab encapsulated. Tsis tas li ntawd, cov hlab ntsha dawb xaus yog qhov tshwj xeeb tsawg, thaum lub paj hlwb encapsulated yog qhov tshwj xeeb heev. Txawm li cas los xij, cov paj hlwb pub dawb yog qhov nkag siab ntau dua li cov paj hlwb uas muaj nyob hauv. Qhov tseeb, cov paj hlwb pub dawb yog hom paj hlwb tshaj plaws uas xa cov cim rau cov paj hlwb. Yog li, qhov no yog cov ntsiab lus ntawm cov paj hlwb dawb thiab encapsulated.
