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Video: Dab tsi yog txoj haujlwm ntawm tus xa xov thib ob?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tus tub txib thib ob. Cov neeg xa xov thib ob yog cov cim qhia sab hauv lub cev tso tawm los ntawm ntawm tes nyob rau hauv cov lus teb rau kis tau rau extracellular signaling molecules-thawj tus neeg xa xov.
Kuj paub yog, lub hom phiaj ntawm tus xa xov thib ob yog dab tsi?
Tus tub txib thib ob , molecule sab hauv cov cell uas ua rau xa cov teeb liab los ntawm tus txais khoom mus rau lub hom phiaj. Ntau tus tub txib thib ob cov molecules me me thiab yog li ntawd nthuav dav nrawm los ntawm cytoplasm, ua kom cov ntaub ntawv txav mus thoob plaws ntawm tes.
Ib yam nkaus, hom sib txawv ntawm tus xa xov thib ob yog dab tsi? Muaj 3 chav kawm tseem ceeb ntawm tus xa xov thib ob:
- cyclic nucleotides (piv txwv li, cAMP thiab cGMP)
- inositol trisphosphate (IP3) thiab diacylglycerol (DAG)
- cov calcium ions (Ca2+)
cov tshuaj twg siv cov neeg xa xov thib ob?
Piv txwv ntawm cov tshuaj hormones tias siv cAMP as ib tus tub txib thib ob suav nrog calcitonin, uas yog qhov tseem ceeb rau kev tsim cov pob txha thiab tswj cov qib calcium hauv cov ntshav; glucagon, uas ua lub luag haujlwm hauv qib ntshav qabzib; thiab cov thyroid stimulating hormone , uas ua rau kev tso tawm ntawm T.3 thiab T.4 los ntawm cov thyroid caj pas.
Cov piv txwv ntawm tus xa xov thib ob yog dab tsi?
Piv txwv ntawm tus tub txib thib ob molecules suav nrog cyclic AMP, cyclic GMP, inositol trisphosphate, diacylglycerol, thiab calcium. Thawj cov neeg xa xov yog cov txheej txheem sab nraud, feem ntau yog cov tshuaj hormones lossis cov kab mob sib kis, xws li epinephrine, kev loj hlob hormone, thiab serotonin.
Pom zoo:
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Kev sib raug zoo ntawm tus neeg txais thiab tus xa xov neurotransmitter yog tias cov neurotransmitter khi, lossis txuas mus rau tus txais
Dab tsi yog lub luag haujlwm tseem ceeb ntawm tus neeg teb xov tooj cuff quizlet?
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Raws li yog ib ntawm plaub leeg ntawm lub cuff rotator, lub luag haujlwm tseem ceeb yog sab nraud tig lub humerus thiab tswj lub xub pwg sib koom
Puas yog diacylglycerol yog tus xa xov thib ob?
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Diacylglycerol (DAG) yog tus xa xov thib ob uas muaj txiaj ntsig zoo uas ua rau cov proteins koom nrog ntau yam kev taw qhia cascades. Txij li lawv tuaj yeem cuam tshuam rau ob qho DAG thiab phosphatidic acid (PA) cov cim, DGK kev ua si ua lub luag haujlwm tseem ceeb hauv ntau txoj kev qhia lipid
Lub luag haujlwm ntawm tus kws saib xyuas mob plawv tsis ua haujlwm yog dab tsi hauv kev saib xyuas cov neeg mob plawv tsis ua haujlwm?
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Raws li ib feem ntawm pab pawg, tus kws kho mob lub plawv tsis ua haujlwm tau zoo muab rau muab kev pabcuam rau cov neeg mob thoob plaws txoj kev mob plawv tsis ua haujlwm thiab qhov no yuav tsum muaj kev koom tes ze nrog kws saib xyuas mob hauv thaj chaw tshwj xeeb tshwj xeeb xws li chav kho mob xwm txheej ceev thiab kev kho mob dav/ saib xyuas-ntawm-tus-neeg laus
Tus kab mob thib tsib thiab thib rau yog dab tsi?
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Thib tsib (erythema infectiosum) thiab tus kab mob thib rau (roseola infantum) yog kab mob sib kis ntawm cov menyuam yaus uas tau lees paub ntev hauv cov tshuaj kho mob. Tsuas yog cov ntaub ntawv hais txog kev mob cuam tshuam nrog kev kis mob thawj zaug nrog tib neeg herpesvirus 6 yog roseola lossis exanthema subitum hauv menyuam yaus