I-digestive system yezilwane ezimbizayo: izici zesakhiwo nokusebenza

Uhlelo lokugaya izidumbu ezinemiphefumula lunomzimba, okwenza kube nzima kakhulu uma kuqhathaniswa nesakhiwo esifanayo ezilwaneni ze-amphibian.

Isici esivamile sezilwane ezinwabuzelayo

Izimpethu zinegama lazo ngenxa yemvelo yokuhamba emhlabeni. Kungenzeka ukuthi abanakho, noma banemilenze emifushane, etholakala endizeni enezingqimba. Ngakho-ke, kubonakala sengathi "bayakhonka" emhlabathini. Zonke izilwane ezibandayo eziye zakwazi ukuhlala ezindaweni ezihlala emanzini nasemhlabeni. Kodwa ukuthuthukiswa kwemibungu yabo, elizungezwe amaqanda amaqanda okuzivikela, kwenzeka kuphela ezweni. Umzimba wezilwane ezihuquzelayo ugcwele izikali ezinomzimba omile.

Izici eziyinhloko zesakhiwo sangaphakathi zibukeka kwe-thorax yamanje, ukuphefumula kuphela kwe-pulmonary, ukukhulelwa kwangaphakathi kanye ne-excretory system yezilwane ezinwabuzelayo, ezimelelwa izinso, isisindo kanye ne-cloaca.

Uhlelo lokugaya: iminyango eyisisekelo

Uhlelo lokugaya izidumbu ezimelelekile luboniswa ipheshana nezinhlayiya ezikhethekile. Ngokungafani nama-amphibians, lezi zilwane zinezinhlayiya eziqhamukayo ezikhiqiza ama-enzyme. Lezi zinto ziyizinto eziphilayo ezithinta izidakamizwa. Bahlukanisa izinto eziyinkimbinkimbi zibe lula. Kule fomu ukuthi bayakwazi ukuyifaka bese igcinwa ukuze igcinwe. Isakhiwo se-digestive system of reptiles sigcizelelwa nokuba khona kwamazinyo angenawo umfutho kanye ne-cecum. Lezi yizici eziyinhloko zenkinga ngokuqhathaniswa nama-amphibians.

I-digestive tract of reptiles iboniswa ngomlomo womlomo, i-pharynx, isisu esincane, isisu nomathumbu. Lezi zinsuku zihlukaniswe futhi ziqukethe ingxenye encane futhi ebanzi, idlulela ku-cecum. Ihubhu yokugaya iphela ne-cloaca. Lo mgodi, okungekho ukudla okungazange kutholakale kuphela, kodwa futhi nemikhiqizo yezinhlelo zokuzikhukhumeza nezokuzala ezidliwayo.

Izigulane zokugaya

Uhlelo lokugaya izidakamizwa luyinkimbinkimbi kakhulu. Ukugaya kokubili kokudla kwezitshalo nezesilwane, abasebenzisa, bekungeke kwenzeke ngaphandle kokutholakala kwama-glands. Ngaphandle kwezinto ezinamandla, izinto kanye nama-enzyme ahlukanisa, aphuculise futhi anikeze ukungenisa kokudla, izilwane ezinwabuzelayo zinesibindi nama-pancreas. Umzimba ngamunye wenza umsebenzi wayo. Isibindi senza i-bile, esithinta futhi ihlukanise izinhlayiya zokudla. I-pancreas ifihla ama-enzyme aqedela ukuhlanza kwamaprotheni, amafutha kanye nama-carbohydrate.

Ama-enzyme we-glands of digestive of reptiles ayinto esebenzayo yemikhiqizo. Ngakho-ke, wonke umuntu uyazi ukuthi izinyoka azihlazi ukudla, kodwa zibamba izilwane zazo zonke. Inqubo yokugaya iqala kuphela esiswini. Ngezinye izikhathi isikhathi saso sifinyelela amasonto ambalwa.

Izici zezinkinga

Njengoba sekushiwo kakade, uhlelo lwe-excretory lwezilwane ezinwabuzelayo lubonakala ngezici ezithile zezinkinga. Naphezu kokuthi wonke amazinyo e-oropharyngeal cavity afanayo futhi akhonza kuphela ukuthatha nokugcina inyamazane, kukhona okukhethekile. Isibonelo, izinyoka ezinobuthi. Abaningi bakholelwa ukuthi baphazamisa inyamazane yabo ngosizo lolimi. Kodwa akunjalo. Emlonyeni wabo kuyinyovu enobuthi, lapho kukhona isiteshi esinomuthi onobuthi. Futhi emilonyeni yezilwane ezidla inyama, isibonelo, ingwenya, futhi akunakwenzeka ukubaleka, ngoba amazinyo abo anamandla kakhulu futhi abukhali. Isibonelo, i-incisors yalesi silwane ngokuvamile "isebenza" ukuthi ishintsha kuze kube izikhathi eziningana ngonyaka. Ngale ndlela, ngokungafani nama-amphibians, iningi labo elinalo ulimi njengomzimba wokudla ukudla, lesi sitho sezingwenya sisebenza ngokuyisisekelo emlonyeni wabo, ngakho kubonakala sengathi akusikho.

Imisebenzi yesistimu yokugaya inyama yezidubhu

Uhlelo lokugaya lwenzelwe ukwakha kanye nokwamukelwa kwezakhi. Uma zihlukaniswa, kukhishwa inani elithile lamandla, elisetshenziswa yizinto eziphilayo ukuze zifeze zonke izinqubo ezibalulekile. Kulesi simo, ukucaca kwenzeka ngosizo lwe-enzyme yezinhlayiya ezikhethekile, futhi ukuhamba kwezinhlayiya zokudla ezivela emlonyeni womlomo kuya kwi-cloaca kwenziwa ngezindonga ze-muscular of the tract.

Ngakho-ke, isimiso sokugaya izidumbu esinezilwane eziphethe izidakamizwa sinezici ezijwayelekile zesakhiwo sezingqinamba, nezinye izici ezihlukile. Ngokusobala, uma kuqhathaniswa nama-amphibians, kunzima kakhulu. Lokhu kubonakala phambi kwama-enzyme okugaya, okwakhiwa yizigulane ezikhethekile, i-caecum kanye nomathumbu ohlukanisiwe.