Uyini Kwabiwa futhi yini ukubaluleka yayo umsebenzi eziphilayo

Zonke izinto eziphilayo, abakhileyo Earth, avulekele eziphilayo. Ukuze silondoloze ukuphila kwabo idinga inflow ukudla, amanzi kanye nowe-oxygen kusukela imvelo bangaphandle ukususwa imikhiqizo umzimba. Ngokusobala, slag Ukukhetha okunjalo liyadingeka silondoloze homeostasis yomzimba ophilayo. Yini ebangela lokhu kuntuleka wezimiso? Ukufa kwenzeka ngenxa kobuthi amaseli metabolites siqu.

Evolution nomthelela ukuvela emizimbeni kokwenza umsebenzi zisusa ubuthi. Namuhla, banayo yonke abameleli izilwane zasendle, esukela ethonyeni eliyingozi elula abantu. Kulesi sihloko, sizothola ukuthi ukukhethwa, futhi ukuze uhlole izici zayo, nobuntu amaqembu ayinhloko eziphilayo.

ulwazi olujwayelekile

Organisms ehlanganisa kuseli eyodwa, abe uhlelo ephelele ukuzithiba futhi ngokukhishwa kobuthi egazini, kwakheka ngenxa dissimilation. Ngokwesibonelo, amoeba Proteus futhi euglena oluhlaza isuswe ubuthi namanzi angadingeki ngokusebenzisa ulwelwesi cell kanye contractile vacuole. Icacisa ukuthi ukukhethwa metabolites kuyinto lithathelwe elula kuya ekwakhekeni nasekumeni komzimba kwendawo yemvelo yasemanzini. eziphilayo ezinamangqamuzana amaningi izinkinga inqubo zisusa ubuthi. Ngo flat, nxazonke, annelids futhi mollusk livela amashubhu - proton noma metanephridia.

Ukuze umdlavuza libhekene indlala oluhlaza, nezinambuzane bayatfutfuka izitsha Malpighian nomzimba amafutha. Ukubukeka kuzithinta amathambo yangaphakathi kakhulu izinguquko inqubo yokwabiwa. Biology yezilwane ezinomgogodla lembula ukwakheka kwezitho eziyinkimbinkimbi - izinso abhanqiwe. Cabanga isakhiwo sabo futhi ukusebenza kwi.

Evolution kohlelo excretory

Fish abe mesonephros iribhoni-like, ukuqamba amanga ngalapha nangalapha yomgogodla kanye ukusefa igazi. Amphibians compact izitho excretory ise vertebra sacral. Kule midlalo, umchamo ureter ludlulele ngaphakathi lo cloaca. Ukubukeka izinso okhalo e ezihuquzelayo, izinyoni, izilwane ezincelisayo humans - kuyinto aromorphosis ezibalulekile.

nephrons kwezinso wenziwa eziyinkimbinkimbi ezimbili inqubo physico-chemical: gqwa igazi reabsorption umchamo eyinhloko. Ngenxa yalokho, igazi ngokuphelele bahlanza ubuthi, esihlinzeka ezingeni physiologically ejwayelekile homeostasis.

Ekuphetheni

Kulesi sihloko, sabuka ukuthi Ukukhetha. Manje wazi izici yale nqubo emaqenjini ehlukene eziphilayo.