Qhov sib txawv tseem ceeb ntawm gustatory receptors thiab olfactory receptors yog tias gustatory receptors yog hloov kho epithelial hlwb uas muaj peev xwm los khi nrog tastants thaum olfactory receptors yog dendrites ntawm neurons uas muaj peev xwm los khi nrog cov ntxhiab molecules.
Gustatory receptors thiab olfactory receptors yog ob hom kev hnov qab. Gustatory receptors yog cov hlwb tshwj xeeb uas tau txais kev saj stimuli. Lawv pom nyob rau hauv papillae ntawm tus nplaig. Nyob rau hauv sib piv, olfactory receptors yog tshwj xeeb chemo-receptors uas tau txais ntau yam tsis hnov tsw stimuli. Lawv muaj nyob rau ntawm olfactory epithelium ntawm lub qhov ntswg kab noj hniav. Structureally, saj receptors yog hloov kho epithelial hlwb, thaum olfactory hlwb yog dendrites ntawm tseeb neurons.
Gustatory Receptors yog dab tsi?
Saj lossis gustation yog qhov nkag siab. Gustatory receptors yog ib pab pawg tshwj xeeb ntawm chemoreceptors uas ntes tastants hauv cov zaub mov. Lawv pom ntawm papillae ntawm tus nplaig. Qhov saum npoo ntawm tus nplaig yog lined los ntawm cov stratified squamous epithelium, thiab papillae yog cov pob tsawb uas muaj cov buds. Muaj peb hom papillae li circumvallate, foliate, thiab fungiform. Tus naj npawb ntawm saj buds yuav txawv nyob rau hauv lub papilla. Txhua lub paj saj muaj ntau lub hlwb tshwj xeeb los yog gustatory receptor hlwb. Peb kuj tuaj yeem pom gustatory receptors nyob rau hauv lub palate thiab thaum ntxov ntawm lub plab zom mov zoo li lub larynx thiab oesophagus.
Daim duab 01: Gustatory Receptors
Gustatory receptors feem ntau txheeb xyuas tsib qhov sib txawv saj, suav nrog qab zib, qab ntsev, iab, qaub, thiab umami. Ntsev thiab qaub saj tau kuaj pom los ntawm kev sib kis ncaj qha thaum qab zib, iab, thiab umami saj tau kuaj pom los ntawm txoj kev ntawm G protein-coupled saj receptors. Taste cells tso cov neurotransmitters. Neurotransmitters activates sensory neurons nyob rau hauv lub ntsej muag, vagus thiab glossopharyngeal cranial qab haus huv.
Olfactory Receptors yog dab tsi?
Olfactory receptors tam sim no nyob rau sab nraum qab ntawm lub qhov ntswg kab noj hniav yog lub luag haujlwm rau qhov hnov tsw tsw los yog olfactory. Qhov tseeb, olfactory receptors muaj nyob rau ntawm olfactory epithelium. Olfactory receptors lossis odorant receptors yog cov ntxhiab tsw receptors uas khi thiab ntes cov ntxhiab tsw ntawm huab cua uas nkag mus rau hauv qhov ntswg. Lawv yog cov dendrites ntawm cov neurons tshwj xeeb. Thaum cov ntxhiab molecules khi nrog olfactory receptors, lawv xa cov impulses ncaj qha mus rau olfactory noob ntawm lub hlwb.
Daim duab 02: Olfactory Receptors
Muaj ntau pua hom olfactory receptors hauv tib neeg lub cev. Ntxiv mus, olfactory receptors yog tam sim no nyob rau hauv ntau heev (millions). Hauv txhua qhov receptor, muaj cov txheej txheem sab nraud (cilia) nthuav tawm mus rau saum npoo ntawm epithelium.
Dab tsi zoo sib xws ntawm Gustatory Receptors thiab Olfactory Receptors?
- Gustatory receptors thiab olfactory receptors yog qhov hnov qab.
- Lawv khi nrog lawv cov ligands.
Qhov txawv ntawm Gustatory Receptors thiab Olfactory Receptors yog dab tsi?
Gustatory receptors yog saj receptor hlwb uas ntes tau saj stimuli. Hauv qhov sib piv, olfactory receptors yog cov neurons muaj tseeb uas pom ntau yam tsw. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm gustatory receptors thiab olfactory receptors. Ntxiv mus, gustatory receptors muaj nyob rau ntawm papillae ntawm tus nplaig, thaum olfactory receptors muaj nyob rau ntawm olfactory epithelium ntawm qhov ntswg kab noj hniav.
Cov hauv qab no infographic qhia txog qhov sib txawv ntawm gustatory receptors thiab olfactory receptors.
Summary – Gustatory Receptors vs Olfactory Receptors
Gustatory receptors yog cov hlwb tshwj xeeb uas pom nyob rau hauv lub saj buds (papillae) ntawm tus nplaig. Gustatory hlwb teb rau saj stimuli. Nyob rau hauv sib piv, olfactory hlwb yog dendrites ntawm neurons pom nyob rau hauv lub olfactory epithelium ntawm lub qhov ntswg kab noj hniav. Lawv ntes ntau yam tsw. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm gustatory receptors thiab olfactory receptors.
