Pinocytosis - Iyini?

Umsoco singene yangaphakathi iseli imvelo bangakunaki asebenzayo ezokuthutha, okuyinto ubuhanjelwe enzyme akhethekile. Kulokhu kukhona izinqubo ezimbili - pinocytosis futhi phagocytosis.

isici Jikelele yenqubo

Pinocytosis - kuyindlela jikelele yokudla, okuyinto sici zezitshalo isilwane amaseli. essence yayo itholakala ukuxhumana izakhi iseli ifomu siphela. Phagocytosis - inqubo efanayo, kodwa kukhona amuncwa izinhlayiya okuqinile.

Kuyaziwa ukuthi pinocytosis kuyinto umfutho kubalulekile ekwakhekeni lysosomes, futhi phagocytosis isethwe phezu yokutheleleka kwamaseli amagciwane eyaziwa. Lezi zinqubo amabili abe eziningi esifana ngazo, ngakho avame bebonke ngokuthi - cytosis noma endocytosis, pinocytosis luvame nakakhulu. Uma imfuyo, kunalokho, lezi zinkulumo zisuselwa amaseli ke omunye ukhuluma exocytosis.

Ngamafuphi, singasho ukuthi pinocytosis - inqubo ye ukumuncwa amaconsi cell ketshezi.

inqubo Izici

Manje-ke kufanele ukuthi ukubala esitokisini lokushisa engaphansi ayikwazi ebibanjelwe 2 ° C, futhi ngaphansi isenzo umzimba inhibitor ezifana sodium-fluoride.

Ngo pinocytosis kwakhiwa amaqhubu cytoplasm - pseudopodia, okuyinto uhlangane nomunye futhi lisibekele amaconsi ketshezi. Kulokhu Bubbles akhiwa, ahlukaniswa kusukela ulwelwesi cell futhi uthuthe ngokusebenzisa cytoplasm, kuphenduke vacuoles ngokuthi pinosomy.

Qaphela ukuthi pinocytosis - futhi umphumela amaseli obala igciwane ukumiswa. Kulokhu, lo vesicles kwakhiwa aqukethe vibrios. Kulapha ukuthi ngezinye izikhathi wadalula kuya esigabeni "undressing". Uma uthwebula molecule emikhulu izidakamizwa ngabanye futhi sihamba bubble kwetinhlavu kanye invagination - vacuole, kodwa lo mshini ezokuthutha izidakamizwa akuyona ezibucayi. nethonya elikhulu ukumuncwa ejenti kwemithi kuyinto isimo sabo, fineness, futhi khona izifo concomitant ka izitho zokugaya - kolwelwesi noma nesifo, isibonelo, isilonda peptic.

amaprotheni reabsorption ku tubules kwezinso

Pinocytosis - indlela esebenzayo wamaprotheni reabsorption ku proximal nephron kwezinso. Phakathi amaprotheni yakhe inamathela kuze kube semngceleni ibhulashi. Kule ndawo invaginated ulwelwesi, ngaleyo ndlela kwakheka isitsha equkethe i-molecule amaprotheni. Lapho amaprotheni ngaphakathi bubble, uqala ukubola ku amino acid, okuyinto kamuva iwe ngokusebenzisa ulwelwesi basolateral ku uketshezi extracellular. Njengoba ezokuthutha enjalo idinga amandla, ibizwa ngokuthi esebenzayo.

Kuyaphawuleka ukuthi kukhona umqondo zokuthutha esiphezulu izinto ukukhuthalele reabsorbed. Le nqubo lihlotshaniswa esiphezulu umthwalo zokuhamba izinhlelo. Kwenzeka lapho inani uxhumano, wangena mafutha anciphisa isikhala esingaphakathi we tubules kwezinso, idlula amakhono enzyme namaprotheni ezokuthutha ehilelekile ukudluliswa.

Njengoba isibonelo, ungase futhi kuholele kahle glucose reabsorption ukuthi kwenzeka tubule proximal emazombezombe. Uma okuqukethwe ketshezi idlula amakhono kwezinso obusebenzayo, uqala ukuba ahlukane umchamo (glucose evamile ayitholiwe).

Okushiwo pinocytosis

Le nqubo ithatha indawo tubules kwezinso kanye epithelium emathunjini. Yena unesibopho ukumuncwa futhi reabsorption compounds eziningi (kuhlanganise amaprotheni namafutha) lapho ludingeka ukusebenza evamile umzimba.

Ngaphezu kwalokho, lapho sihamba pinocytosis umzimba ogangeni capillary. Ngakho, ama-molecule esikhulu okuyinto abakwazi ukungena ngokusebenzisa ezimbotsheni izitsha ezincane igazi, uthuthwa pinocytosis. Kulokhu ulwelwesi lwama-capillary is invaginated amaseli, kanjalo zakha isimiso vacuole oluzungeze engqamuzaneni. Ngakolunye uhlangothi yezinyoni inqubo okuphambene iqala ukuthatha indawo - emiocytosis.

Kufanele kushiwo ukuthi pinocytosis - kuyinto ebalulekile asebenzayo ion ezokuthutha kanye isicelo. Ukuthi indlela eyinhloko Ukungena ku imvelo yangaphakathi ephezulu izinto amangqamuzana. Ngaphezu kwalokho, kuyindlela eyinhloko Ukungena isilwane noma isitshalo amagciwane kuseli aphethe.