Pinocytosis - menene wannan?

Gina jiki samu shiga cikin ciki cell yanayi domin kudi na aiki da sufuri, wanda aka samu halartar musamman enzymes. A wannan yanayin akwai biyu matakai - pinocytosis da phagocytosis.

Sifofinsu aiwatar

Pinocytosis - shi ne a duniya hanyar cin abinci, wanda shi ne halayyar shuka da kuma dabba Kwayoyin. Its ainihi ta'allaka ne a lamba tare da cell gina jiki a narkar da form. Phagocytosis - a irin wannan tsari, amma akwai suna tunawa da m barbashi.

An sani cewa pinocytosis ne wani muhimmin kara kuzari ga samuwar lysosomes, kuma phagocytosis aka kafa a kan kamuwa da cuta na sel da ƙwayoyin cuta. Wadannan biyu matakai da yawa a cikin na kowa, don haka su suna da yawa tare kira - cytosis ko endocytosis, pinocytosis ne ma fi prevalent. Idan abu, a maimakon haka, an samu daga cikin Kwayoyin, to, wanda yayi magana akan exocytosis.

Don takaice, zamu iya cewa pinocytosis - wani tsari na sha na cell ruwa droplets.

aiwatar Features

Yanzu dole ne a ce cewa tantanin halitta count ne zazzabi dogara da ba za a iya gudanar a 2 ° C, da kuma karkashin mataki na na rayuwa hanawa kamar sodium fluoride.

A pinocytosis kafa outgrowths cytoplasm - pseudopodia, wanda ci tare da juna da kuma envelop da ruwa droplets. A wannan yanayin da kumfa an kafa, wanda aka rabu da jikin tantanin kuma yi ƙaura ta cikin cytoplasm, juya cikin vacuoles kira pinosomy.

Lura cewa pinocytosis - shi ne ma sakamakon da Kwayoyin fallasa da cutar dakatar. A wannan yanayin, da kafa vesicles dauke da vibrios. A nan ne wani lokaci ana gitta su a mataki na "undressing". Lokacin da kamawa fi girma kwayoyin mutum kwayoyi ma wuce kumfa samuwar kuma invagination - vacuole, amma inji sufuri da kwayoyi ba m. Greater tasiri a sha na pharmacological jamiái ne su siffar, fineness, da kuma gaban concomitant cututtuka na narkewa kamar gabobin - gastritis ko colitis, misali, peptic miki.

gina jiki reabsorption a koda tubules

Pinocytosis - wani aiki inji na gina jiki reabsorption a proximal koda nephron. A lokacin da ya gina jiki dora wa goga iyaka. A wannan wuri invaginated membrane, haka kafa vial dauke da sunadarin. Lokacin da gina jiki ne ciki na kumfa, shi zai fara zuwa decompose cikin amino acid, wanda baya fada ta hanyar da basolateral membrane cikin extracellular ruwa. Tun da irin wannan kai na bukatar makamashi, shi ne ake kira mai aiki.

Shi ne ya kamata a lura da cewa akwai wani ra'ayi na matsakaicin kai na abubuwa da ake rayayye reabsorbed. Wannan tsari da ake dangantawa da matsakaicin kaya tsarin sufuri. Yana faruwa a lokacin da yawan sadarwa, ya samu shiga cikin lumen na koda tubules, ya wuce damar enzymes da kai sunadaran da hannu a cikin canja wuri.

A matsayin misali, za ka iya haifar da illa glucose reabsorption da ya auku a cikin proximal tubule Tuddan. Idan abun ciki na abu ya wuce na koda aikin damar, shi zai fara zuwa ware daga fitsari (al'ada glucose ba gano).

Meaning of pinocytosis

Wannan tsari faruwa a koda tubules da hanji epithelium. Shi ne da alhakin sha da kuma reabsorption na da yawa mahadi (ciki har da furotin da kuma kitse) cewa wajibi ne ga al'ada aiki na jiki.

Bugu da ƙari, lokacin da ya wuce pinocytosis metabolism ta cikin capillary bango. Saboda haka, manyan kwayoyin wanda zai iya ba shiga ta cikin pores na kananan jini, hawa da pinocytosis. A wannan yanayin da capillary membrane ne invaginated Kwayoyin, game da shi, kafa vacuole wanda na kewaye da kwayoyin. A gefen da keji m aiwatar fara dauki wuri - emiocytosis.

Ya kamata kuma a ambaci cewa pinocytosis - shi ne wani muhimmin bangaren da aiki ion kai da kuma amfani. Wannan shi ne babban inji na shigar azzakari cikin farji cikin ciki yanayi na high kwayoyin abubuwa na sel. Bugu da kari, shi ne babban hanyar shigar azzakari cikin farji na dabba ko shuka ƙwayoyin cuta a cikin rundunar cell.