Pinocytosis - yintoni na le nto?

Nutrients singene bume iseli zangaphakathi ngokuxhaphaza esebenzayo zothutho, apho kuyo enqanda ezizodwa. Kule meko kukho iinkqubo ezimbini - pinocytosis kunye phagocytosis.

uphawu ngokubanzi inkqubo

Pinocytosis - le yindlela jikelele ngokutya, nto leyo uphawu zezityalo kunye neeseli nezilwanyana. kubume bayo elala wadibana izondlo iseli ngohlobo lichithakale. Phagocytosis - inkqubo efanayo, kodwa kukho kwelifunekayo amasuntswana okuqinileyo.

Yinto eyaziwayo ukuba pinocytosis yi sibangela ebalulekileyo ukuze kwakhiwe lysosomes, kunye phagocytosis umiselwe phezu ukusulelwa iiseli virus. Ezi nkqubo zimbini banezinto ezininzi abafana ngazo, ngoko ngokufuthi zibizwa ngokuhlangeneyo - cytosis okanye endocytosis, pinocytosis lilingene yande. Ukuba into, phezu koko, zivela kwiiseli, ngoko omnye uthetha exocytosis.

Ngamafuphi, ukuba uthi pinocytosis - inkqubo kukufakwa amathontsi cell ulwelo.

inkqubo Iimpawu

Ngoku kufuneka kusithiwa ukuba iseli count lobushushu ixhomekeke kwimiba ethile ayikwazi kubanjelwa 2 ° C, naphantsi inyathelo pathways inhibitors ezifana sodium fluoride.

Xa pinocytosis kwakhiwa outgrowths kukho icytoplasm - pseudopodia, leyo idibane nenye kwaye lisibekele amathontsi amanzi. Kulo mzekelo amadlu akhiwa, ezahlulwa ukusuka kwiseli inwebu kwaye ukuthutha ngalo kukho icytoplasm, ajike abe vacuoles ebizwa pinosomy.

Qaphela ukuba pinocytosis - nayo ngenxa iiseli ekucaca ukuba ukumiswa ntsholongwane. Kulo mzekelo, i vesicles ukusekwa ziqulathe vibrios. Kulapha ukuba maxa wambi abakhuselekanga nenqanaba "simo". Xa capturing iimolekyuli ezinkulu iziyobisi ngamnye sidlula kwiqamza ukubunjwa invagination - vacuole, kodwa indlela yezithuthi iziyobisi akuyonto ibalulekileyo. nempembelelo enkulu phezu ukufunxeka arhente amayeza na ukumila kwawo, fineness, kwaye ukubakhona kwezifo esihamba kunye ngamalungu zokugaya - gastritis okanye ukudumba, umzekelo, isilonda Peptic.

protein reabsorption kwi tubules sezintso

Pinocytosis - indlela esebenzayo weeproteni reabsorption kwi nephron proximal sezintso. Ngexesha protein yakhe incamathela kumda brush. Kule ndawo invaginated inwebu, oko kwasekwa igutyana equlethe zinemoletyhule protein. Xa weeprothini ngaphakathi kwiqamza, iqalisa ukubola zibe asidi acid, apho kamva kuwa ngenxa inwebu basolateral kwi kulwelo extracellular. Ekubeni zothutho ezinjalo kufuna amandla, oko kuthiwa esebenzayo.

Kubalulekile ukuphawula ukuba kukho ingqiqo zothutho ezona zininzi izinto ezithi ngokubizwa ngenkuthalo. Le nkqubo enxulumene neenkqubo umthwalo zokuthutha eliphezulu. Oku kwenzeka xa inani kokufakelwa, bangena sayo le tubules kwezintso, zingaphezu izakhono enqanda kunye neeproteni zothutho ababandakanyekayo ugqithiselo.

Ngokomzekelo, unako kwakhona kunokubangela kakuhle reabsorption glucose ukuba kwenzeka tubule proximal jiko. Ukuba umxholo nomongo kune ubunakho sezintso esebenza, uqala ukuba ahlukane umchamo (iswekile oqhelekileyo hayi bekubona).

Intsingiselo pinocytosis

Le nkqubo ithatha indawo tubules kwezintso kunye epithelium emathunjini. Unoxanduva nokufunxwa kunye reabsorption of iikhompawundi ezininzi (kuquka iiproteins kunye namanqatha) ukuba kuyimfuneko eqhelekileyo yokusebenza komzimba.

Ngaphezu koko, xa udlula pinocytosis yokucolwa eludongeni capillary. Ngenxa yoko, iimolekyuli ezinkulu abakwazi ukungena ngenxa pores kwemithambo yegazi, ethuthwa pinocytosis. Kulo mzekelo inwebu capillary sele invaginated iiseli, ngaloo ndlela bakha vacuole esijikeleze molecule. Kwelinye icala ebuhlanti inkqubo malunga uqala ukuthatha indawo - emiocytosis.

Kumele kukhankanywe kwakhona ukuba pinocytosis - wenkqubo yinxenye ebalulekileyo zothutho ion esebenzayo isicelo. Ukuba indlela engundoqo elalana kokusingqongileyo lwangaphakathi kwezinto aphezulu beemolekyuli of iiseli. Ukongeza, kuba yeyona ndlela iphambili elalana isilwanyana okanye isityalo iintsholongwane kwi host yeseli.