Isibindi Human: isakhiwo kunye nokusebenza

isibindi yabantu unoxanduva lokuphuhlisa kweekhemikhali ezintsha yokungenelela ubuthi kunye nemveliso yokucolwa emzimbeni womntu. Le misebenzi zibalulekile.

Indawo kwesibindi ebantwini ingqamana intshukumo igazi namathumbu, ethwala izakhi. Ezi zinto ke etsalwe ukuthathwa ukutya. Ngenxa yoko, ukuba ubuyele intliziyo kunye nemiphunga ukusuka itoti igazi isisu, ukuba inkqubo ngaphambili lwemithambo ekhokelela esibindini.

Ofumaneka ngaphezu ngqo umzimba uvalo. isibindi Human mazikhuselwe iimbambo asezantsi ukusuka umonakalo. Phantsi kweemeko eziqhelekileyo ukungavakali kuyo. Noko ke, malunga nemvelaphi ezinye izifo kukho ukwanda emzimbeni, kwaye xa ucinizela kwi esiswini oko ngokulula ubonwe.

Isakhiwo kwesibindi kwabantu

Eli lungu yeyona inkulu emzimbeni. isibindi yabantu ezinobunzima ukusuka kg 1,36 ukuya 1,81.

Emzimbeni umahluko phakathi ezimbini eveleleyo ndawo. Nomhlehlo lasekunene isibindi ukuba ngakumbi kwaye ibekwe ngapha phezu kwe window ye kwicala ezahlukahlukeneyo peritoneum. Kwicala lasekhohlo ngingqi (ngaphantsi) ifikelela iziko ekhohlo.

iiseli zomzimba enze imisebenzi kwinqanaba kakhulu, ngaloo ndlela kubonelelwa iinkqubo zibalulekileyo ebomini. zibizwa ngokuba "hepatocytes" Xa isigama zonyango. Umsebenzi wabo edibene izinto eziphambili: amafutha, iiprothini kunye carbohydrate. Ngaphandle kwezi ngongoma ayinakuba khona umzimba.

zibaluleke kakhulu ngokunxulumene inxaxheba yabo kwindalo kunye nokubuyiselwa iiseli, ukuyilwa emzimbeni, uphuhliso enqanda iiprothini.

Carbohydrate amelwe iklasi enkulu wemichiza. Ziqulethe ezintathu athom: hydrogen, carbon neoksijini. Wekhabohayidreyiti iguqulelwa eswekile iifom ezinxulumene ngokusondeleyo. Omnye wabo - glucose, kwaye eyesibini - glycogen. Ukungabikho iswekile egazini kuba nefuthe elibi kakhulu ekusebenzeni ingqondo. Kwaye nako ngokugqithiseleyo kwaso egcinwe ngohlobo glycogen.

Kwakhona kubalulekile ukuba umzimba kunye namafutha. isibindi Human kuguqula zibe iifomu ezifanelekileyo kwakhona yethishyu adipose, umaleko ongama. Ngaphezu koko, le mveliso yindlela yolondolozo amandla.

Vienna umaleko iquka iiseli ezizodwa (Kupffer) enza umsebenzi ezincamathelayo kwegazi lokuhlanjululwa yibhaktheriya. Ukongeza, ukuba bathathe corpuscles ezingeyomfuneko ebomvu ayidlulisele ukuba nokusingatha hepatocytes.

Kwinkqubo yotshintsho kunye byproducts zikhutshwa. Ngokukodwa, ammonia lulwelo ityhefu. iiseli Isibindi Nokwethisa kuyo. Oku velisa imveliso ekhuselekileyo - urea - ukubuyela emva egazini. Ukutya amanqatha negazi zixhonyiwe ngohlobo inyongo.

Ukugcina yokusebenza lomgadi imisebenzi kunye nokunika amandla kwinyama umzimba kufuneka flow ngcembe glucose. Kumgangatho yayo liphantsi kakhulu cleavage wekhabohayidreyiti yaye kwasekwa iiproteni elide. Ngenxa kokusetyenziswa ngokukhawuleza iiproteni izicwili ezininzi sokuyivula ukuze zisetyenziswe ngohlobo umthombo yeemveliso ukugaywa ngamanqatha. Ezi mveliso zibizwa ngokuba "ketones".

Ngenxa yokungabikho glucose ziveliswa kwaye zikwazi ukuya wesibindi ijwabu okunamafutha. imizimba Ketone, Usuke wema kwangoko ngaphandle kwegazi baqale kusetyenziswa izihlunu, ingqondo, intliziyo kunye nezinye nezihlunu njengomthombo wamandla.

Suku ngalunye, i-isibindi ukhupha inyongo malunga ilitha. Le mveliso iqulethe inani elikhulu inamacandelo imichiza. Bile ebandakanyeka kwinyathelo ukwetyisa kwamafutha, kuba yinxalenye yenkqubo excretory.

Kwesibindi yenye amalungu ibalulekileyo. Ukongeza, yena inxaxheba kwiinkqubo pathways, umsebenzi wayo kukuba ukuhluza igazi kunye nokulondolozwa, ukuyilwa inyongo, iinkqubo yokwetyisa.