Isibindi siyilungu ebalulekile lomzimba elibhekene nokuxoshwa kwegazi, umzimba, ukuhlanganiswa nokugcina izinto ezihlukahlukene. Isibindi sibalulekile empilweni. Ngaphandle kwalo, umuntu akakwazanga ukuhlala amahora angaba ngu-24.
Usayizi nobukhulu
Isibindi yingxenye enkulu kunazo zonke yangaphakathi emzimbeni (isikhumba sibhekwa njengesitho esikhulu kakhulu emzimbeni wonke) futhi sinesisindo esingamakhilogremu angu-1500g.
Lesi sitho esibomvu esinobomvu sitholakala ngaphansi kwezimbambo ezingxenyeni ezingenhla kwesisu esiswini, ngezansi kwesibhamu. Iningi lesibindi livikelwe yi-cage cage, kodwa kungenzeka odokotela bazizwe benqenqemeni ngokucindezela ngokujulile esiswini lapho isiguli sigxilisa umoya omkhulu.
Kukhona ama-lobes amabili ngaphandle kwesibindi, i-lobe enkulu kakhulu ne-lobe encane kwesokunxele. I-band of tishu ezixhumeneyo ihlukanisa i-lobes futhi igcina isibindi esiswini esiswini.
Izicubu zesibindi zakhiwa ngamaseli amancane amangqamuzana ebindi. Phakathi kwalawo maseli, imigodi eminingi ithwala igazi ne-bile (uketshezi olwenziwe futhi kukhishwe isibindi futhi kugcinwe ku- gallbladder ).
Izinqubo
Amakhemikhali, imishanguzo nezinye izinto (kuhlanganise nezinto ezinobuthi) ukuhamba ngegazi ukuya esibindi. Kanye lapho, lezi zinto zicutshungulwa, zigcinwe, ziguquliwe futhi zixhunyiwe. Bese baphindela emuva egazini noma bakhululwe emathunjini.
Ngosizo lwe-vitamin K, isibindi siphinde sakhiqize amaprotheni asiza nge-clotting yegazi. Isibindi futhi sinye yezingxenye ezithinta amaseli endala noma awonakele.
I-Metabolism
Isibindi sidlala indima ebalulekile ekusetshenzisweni kwamathambo, ama-carbohydrate, namaprotheni. E-fat metabolism, isibindi siphuza amafutha futhi senza amandla.
Iphinde ikhiqize i-bile, i-yellow, i-brownish noma i-oliva eluhlaza oketshezi olusiza ukuphuza nokubamba amafutha.
Ku-metabolism ye-carbohydrate, isibindi kusiza ukugcina izinga leshukela egazini lakho njalo. Uma udla, futhi ushukela wakho wegazi usuka, isibindi sisusa ushukela egazini bese usigcina ngesimo esibizwa ngokuthi i-glycogen. Uma ushukela wegazi lakho liphansi kakhulu, isibindi siphula phansi i-glycogen futhi shipha ushukela egazini. Isibindi siphinde sigcine amavithamini namaminerali (insimbi nethusi) futhi uyasikhipha egazini uma kudingeka.
Ku-metabolism yamaprotheni, amangqamuzana e-isibindi ashintsha ama-amino acids ekudleni ukuze asetshenziselwe ukukhiqiza amandla, noma enze ama-carbohydrate noma amafutha. Le nqubo idala into enobuthi ebizwa ngokuthi i-ammonia. Isibindi sithatha le-ammonia bese siyenza ibe yinto ephansi kakhulu engcolile okuthiwa i-urea, ekhishwa egazini. Urea uhambela izinso futhi uphume emzimbeni emcintini.
Umthombo:
I-PubMed Health [Inthanethi]. (Kubuyekezwe uNomb. 22, 2012) "Isibindi sisebenza kanjani?" Izikhungo zezempilo zikazwelonke.