Pinocytosis - dab tsi yog qhov no?

As-ham tau mus rau hauv lub internal cell ib puag ncig rau cov nuj nqis ntawm active thauj, uas yog kawm los ntawm tshwj xeeb enzymes. Nyob rau hauv cov ntaub ntawv no muaj ob dab - pinocytosis thiab phagocytosis.

General cov yam ntxwv ntawm tus txheej txheem

Pinocytosis - nws yog ib tug universal txoj kev ntawm kev noj mov, uas yog cov yam ntxwv ntawm nroj tsuag thiab tsiaj hlwb. Nws essence lies nyob rau hauv kev sib cuag nrog lub cell as-ham rau yaj daim ntawv. Phagocytosis - ib tug zoo xws li cov txheej txheem, tab sis muaj yog absorbed los ntawm cov khoom hais.

Nws yog lub npe hu hais tias pinocytosis yog ib qho tseem ceeb stimulus rau cov tsim ntawm lysosomes, thiab phagocytosis yog teem raws li qhov kab mob ntawm lub hlwb los ntawm cov kab mob. Cov ob dab muaj ib tug ntau nyob rau hauv ntau, yog li ntawd lawv feem ntau collectively hu ua - cytosis los yog endocytosis, pinocytosis yog txawm ntau tus nais khu. Yog hais tias lub tshuaj, on qhov tsis tooj, yuav muab tau los ntawm lub hlwb, ces ib tug hais lus ntawm exocytosis.

Mus sum txog, peb yuav hais tias pinocytosis - ib tug txheej txheem ntawm haum ntawm lub cell kua mob.

txheej txheem nta

Tam sim no nws yuav tsum tau hais tias tus cell count yog kub nyob thiab yuav tsis tau tuav ntawm 2 ° C, thiab nyob rau hauv qhov kev txiav txim ntawm metabolic inhibitors xws li sodium tshuaj fluoride.

Nyob rau hauv pinocytosis tsim outgrowths cytoplasm - pseudopodia, uas hauj lwm ua ke nrog txhua lwm yam thiab envelop cov kua mob. Nyob rau hauv rooj plaub no tus npuas yog tsim, uas yog cais los ntawm lub cell daim nyias nyias thiab mus mus los ntawm lub cytoplasm, xa mus rau hauv vacuoles hu ua pinosomy.

Nco ntsoov tias pinocytosis - tseem yog tus tshwm sim ntawm lub hlwb raug tus kab mob no raug tshem tawm. Nyob rau hauv cov ntaub ntawv no, lub tsim hlwv muaj vibrios. Nws yog ntawm no tias lawv yog tej zaum raug mus rau theem ntawm "undressing". Thaum capturing loj molecules ib tug neeg siv tshuaj yeeb kuj kis npuas tsim thiab invagination - vacuole, tab sis lub mechanism ntawm thauj cov tshuaj tsis yog ib qho tseem ceeb. Greater cawv rau cov haum ntawm pharmacological cov neeg ua hauj yog lawv zoo lawm, fineness, thiab muaj cov concomitant kab mob ntawm digestive kabmob - gastritis los yog mob plab, piv txwv li, peptic rwj.

protein reabsorption nyob rau hauv lub raum tubules

Pinocytosis - ib tug active mechanism ntawm protein reabsorption nyob rau hauv lub proximal raum nephron. Thaum lub sij hawm nws protein hniav rau tus txhuam ciam teb. Nyob rau hauv no qhov chaw invaginated membrane, yog li tsim vial muaj ib tug protein molecule. Thaum lub protein yog hauv lub npuas, nws pib mus rau decompose rau hauv amino acids, uas tom qab lub caij nplooj zeeg ntawm lub basolateral membrane mus rau hauv lub extracellular kua. Txij li thaum xws thauj yuav tsum tau zog, nws yog hu ua kom nquag plias.

Nws yog ib nqi sau cia hais tias muaj yog ib tug tswvyim ntawm ntau thauj ntawm tshuaj uas muaj kev koom reabsorbed. Qhov no txoj kev yog txuam nrog lub siab tshaj plaws load tsheb thauj mus los tshuab. Nws tshwm sim thaum lub xov tooj ntawm kev sib txuas, tau txais mus rau hauv lub lumen ntawm lub raum tubules, tshaj lub peevxwm ntawm enzymes thiab thauj cov nqaijrog muab kev koom tes nyob rau hauv lub hloov lwm lub tsev.

Raws li ib qho piv txwv, koj yuav tau ua nyob rau hauv impaired zib reabsorption uas tshwm sim nyob rau hauv lub proximal tubule winding. Yog hais tias cov ntsiab lus ntawm cov tshuaj yeeb dej caw ntau tshaj raum haumxeeb tuition, nws pib cais los ntawm cov zis (cov glucose tsis kuaj).

Lub ntsiab lus ntawm pinocytosis

Qhov no txoj kev yuav siv sij hawm qhov chaw nyob rau hauv lub raum tubules thiab cov plab hnyuv epithelium. Nws yog lub luag hauj lwm rau haum thiab reabsorption ntawm ntau lub tebchaw (xws li cov protein ntau thiab muaj roj) uas yog tsim nyog rau ib txwm hauj lwm ntawm lub cev.

Ntxiv mus, thaum kis pinocytosis metabolism los ntawm cov capillary phab ntsa. Yog li, loj molecules uas yuav tsis txeem los ntawm lub pores ntawm me me cov hlab ntsha, thauj los ntawm pinocytosis. Nyob rau hauv rooj plaub no tus capillary daim nyias nyias yog invaginated hlwb, li no txoj kev ua ib vacuole uas puag ncig lub molecule. Nyob rau opposite sab ntawm lub tawb opposite txheej txheem pib mus rau qhov chaw - emiocytosis.

Nws yuav tsum raug hais tias pinocytosis - yog ib tug tseem ceeb feem ntawm active ion thauj thiab ua ntawv thov. Hais tias nws yog lub ntsiab mechanism ntawm allergic rau hauv lub internal ib puag ncig ntawm siab molecular tshuaj ntawm lub hlwb. Nyob rau hauv tas li ntawd, nws yog ib lub ntsiab txoj kev ntawm allergic ntawm cov tsiaj los yog cog kab mob nyob rau hauv tus tswv tsev cell.