Pinocytosis - he aha te mea tenei?

Matūkai whiwhi ki te taiao pūtau ā-mo te utu o kaha waka, tae nei e whākōkī motuhake. I roto i tenei take i reira e rua ngā tukanga - pinocytosis me phagocytosis.

āhuatanga General o te tukanga

Pinocytosis - Ko reira te ara ao o kai, i te mea huru o te tipu, me te kararehe pūtau. takoto Ko tōna ngako i roto i te whakapā atu ki te matūkai pūtau i roto i te puka rewa. Phagocytosis - he tukanga rite, engari i reira e riro e matūriki totoka.

Kei te mohiotia te reira e pinocytosis ko he faaitoitoraa nui mo te hanganga o lysosomes, ka whakaturia phagocytosis te ki runga ki te mate o ngā pūtau i huaketo. Ēnei tukanga e rua i te rota i roto i te noa, na e maha ngā huaina ratou - cytosis endocytosis ranei, he ara atu lahi pinocytosis. Ki te te taonga, i runga i te anga ke, kua ahu mai i te pūtau, ka tetahi korero o exocytosis.

Hei huihuia ake, ka taea e tatou te mea i taua pinocytosis - he tukanga o absorption o te rūrūtia pūtau wai.

tukanga Āhuatanga

Na me mea ai e te tatau pūtau he pāmahana ti'aturi, me te kore e taea te pupuri i te 2 ° C, me i raro i te mahi o inhibitors pūkoro pērā i te konutai pūkōwhai.

I roto i te pinocytosis i hanga outgrowths cytoplasm - pseudopodia, e hanumi ki ia atu, me te kāpui 'i te rūrūtia wai. I roto i tenei take e hanga e nga mirumiru, e kua wehea i te membrane pūtau me ki te heke i roto i te cytoplasm, tahuri ki vacuoles i huaina pinosomy.

Kia mahara taua pinocytosis - ko ano hoki te hua o te pūtau kitea ki te whakatārewatanga huaketo. I roto i tenei take, i roto i nga vesicles i hanga vibrios. Ko reira konei e e te tahi mau taime wāhi ratou ki te wā o "undressing". A, no te hopu rāpoi nui taero takitahi haere hoki mirumiru hanganga me te invagination - miru, engari e kore te mea tino te huarahi o te waka o taero. mana nui i runga i te absorption o āpiha pharmacological ko to ratou āhua, tuhono, me te aroaro o mate te rere o whekau kūnatunga - gastritis colitis ranei, mo te tauira, whewhe keté.

reabsorption pūmua i roto i te tubules tākihi

Pinocytosis - he tikanga kaha o te pūmua reabsorption i roto i te waepuha tākihi proximal. I roto i tona pūmua piri ki te rohe paraihe. I roto i tenei wahi invaginated membrane, te kupu i hanga oko kei roto i te rāpoi ngota pūmua. A, no te Ko te pūmua roto o te mirumiru, haamata te reira ki te hanehane ki waikawa amino, e muri hinga i roto i te membrane basolateral ki te inu wahopūtau. Mai titau taua waka pūngao, huaina ai ko kaha.

E tano ia tapao e reira ko te ariā o te waka mōrahi o ngā matū e kaha e reabsorbed. e pā ana tēnei tukanga te ki te pūnaha kawenga transportation mōrahi. Puta reira ka, ka te maha o ngā hononga ki te lumen o nga tubules tākihi, nui te kaha o whākōkī, me whai wāhi i roto i te whakawhiti pūmua waka.

Ka rite ki te tauira, ka taea e hoki hua koutou i roto i reabsorption kūhuka waimaero e puta i roto i te tubule proximal awhiowhio te. Ki te nui ake te ihirangi o te taonga kaha mahi mate täkihi, haamata te reira ki te wehe i te mimi (te kūhuka noa e kore e kitea).

Meaning o pinocytosis

e tenei tukanga wahi i roto i te tubules tākihi me te epithelium intestinal. Ko ia te kawenga mō te absorption me te reabsorption o pūhui maha (tae atu pūmua me te ngako) e te mea e tika ana mo te mahi noa o te tinana.

Ano, ka haere pinocytosis pākia i roto i te taiepa capillary. Ko te kupu, rāpoi nui e kore e taea e e tomo i roto i te kōputaputa o oko toto iti, kawea e pinocytosis. I roto i tenei take invaginated te membrane capillary te pūtau, reira hanga he miru e karapoti te rāpoi ngota. I te taha ki te ritenga atu o te tukanga ritenga whare herehere haamata ki te tango i te wahi - emiocytosis.

kia hoki kia whakahuatia te reira e pinocytosis - ko te wāhanga nui o te waka katote kaha, me te tono. Ko reira te tikanga matua o te penetration ki te taiao ā-o matū rāpoi tiketike o ngā pūtau. I tua atu, ko reira te ara matua o te penetration o kararehe te tipu ranei huaketo i roto i te pūtau ope.