Izilwanyana eziphefumlayo

Umxholo

• Iindidi zegill
• Imizekelo yezilwanyana eziphefumla ngee gill

Inkqubo ye- ukuphefumla Yinkqubo apho izinto eziphilayo zifumana khona ioksijini. Oku kuphefumla kunokuba yimiphunga, i-branchial, i-tracheal okanye i-cutaneous.

Izilwanyana eziphefumla ngee-gill zizilwanyana zasemanzini zamanzi amatsha netyuwa, phakathi kwazo kukho iintlobo ezininzi ze-crustaceans, iintshulube, izilwanyana eziphila emhlabeni nasemanzini, iimollusks nazo zonke iintlanzi. Njengokuba: ukrebe, unonkala, ingwane.

Ukuphefumla kwe-Gill kwenziwa ngamagill okanye iigill, ezingamalungu okuphefumla acoca ioksijini emanzini ukuya egazini nakwizicubu. Le oksijini ibalulekile ekuphefumlweni kweselula. Iigill zicoca ioksijini kwaye zikhuphe ikharbon diokside kwindalo esingqongileyo.

Iindidi zegill

Iigill zizihlunu ezenziwa ngamashiti amancinci okanye yimicu emincinci enemithambo yegazi ehlengahlengiswe kukuhamba rhoqo kwezilwanyana kwindawo yazo yasemanzini. Zihlala zikwindawo ephezulu yomzimba wesilwanyana kwaye zinokuba ngaphandle okanye ngaphakathi.

• Iigilizi zangaphandle. Zenzeka kwizilwanyana ezingenamqolo okanye ekuqaleni kokuvela kwezinye izilwanyana. Zizinto zakudala nezilula ezinxibelelana ngqo nendalo. Oku kunezinto ezininzi ezingeloncedo, njengoko zinokonakala ngokulula kwaye zenze ukuba ubunzima be-locomotion bube lula. Njengokuba: urchin wolwandle kunye nemibungu yezinye iintlobo zasemanzini zinemiphunga yangaphandle.
• Iigill zangaphakathi. Zenzeka kwizilwanyana ezikhulu zasemanzini. Zikhuselwe ngokuyinxalenye kwimingxunya ebanika ukhuseleko. Njengokuba: I-bony fish (ityhuna, i-cod, i-mackerel) ine-operculum (yokugqibela ekhusela iigill).

Imizekelo yezilwanyana eziphefumla ngee gill

• Qhubeka kunye: Izilwanyana ezinokuphefumla kwetracheal