Si se kdaj vprašal, kaj se zgodi s hrano, ko... Show more
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Updated Mar 22, 2026
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Kako potuje hrana skozi naše telo?
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Osnove prebave
Verjetno misliš, da je prebava preprosta - pograziš in končano. V resnici pa je to neverjeten proces, kjer tvoje telo hrano razgradi na drobne delčke, ki jih lahko uporabi.
Obstajata dve vrsti prebave. Mehanska prebava pomeni fizično drobljenje (kot grizenje z zobmi), kemična prebava pa uporablja posebne "pomagače" - encime. Ti encimi so kot majhni delavci, ki razgrajujejo različne vrste hrane.
Tvoje telo potrebuje tri glavne hranilne snovi: ogljikove hidrate za energijo (kruh, testenine), beljakovine za rast (meso, jajca) in maščobe za energijo in gradnjo celic (olja, maslo). Ko so te snovi prebavljene, se absorpcija - torej vstop hranil v kri - poskrbi, da pridejo do vseh celic v telesu.
💡 Dobro je vedeti: Absorpcija se zgodi samo v tankem črevesu - to je edino mesto, kjer hranila lahko pridejo v kri!
Pot hrane skozi telo
Hrana potuje po dolgi "cevi" skozi tvoje telo - od ust do zadnjika. Vsak del te prebavne cevi ima svojo posebno nalogo, tako kot postaje na proizvodnji čokolade.
Prvi del poti: od ust do želodca
V ustih se prebava šele začne. Tvoji zobje mehano drobijo hrano, medtem ko slina z encimom amilaza že začne razgrajevati škrob iz kruha ali testenin. Jezik oblikuje grižljaj, ki ga lahko pogoTneš.
Po požiralniku hrana potuje z zanimivim gibanjem, imenovanim peristaltika - mišice se krčijo in potiskajo hrano navzdol. Poklopec pa zapre pot v sapnik, da ne zadihaš hrane!
Želodec deluje kot močna mešalna mašina. Njegove stene se krčijo in mešajo hrano, medtem ko želodčna kislina ubija bakterije in encim pepsin začne razgrajevati beljakovine. Rezultat je gosta tekočina, imenovana himus.
💡 Pozor: Pogosta napaka je misliti, da se vsa prebava zgodi v želodcu. V resnici se tam samo začne prebava beljakovin!
Tanko črevo - glavni junak
Tanko črevo je pravi junak prebave! Tu se zgodi večina kemične prebave in VSA absorpcija hranil. Predstavljaj si ga kot 6 metrov dolgo "super tovarno".
Dva pomembna organa pošljeta svoje "sokove" v tanko črevo. Trebušna slinavka proizvaja močne encime, ki dokončno prebavijo vse tri vrste hranil. Jetra pa proizvajajo žolč (ki ni encim!), ki razbije velike kaplje maščob na manjše.
Notranja stena tankega črevesa ima posebne izrastke - črevesne resice. Te so kot majhne prstke, ki močno povečajo površino za absorpcijo. Prebavljene hranilne snovi tako hitro prehajajo v kri.
Poglej si primer sendviča s sirom: škrob iz kruha se spremeni v sladkorje, beljakovine iz sira v aminokisline, maščobe pa v maščobne kisline. Vse to se absorpcija v tankem črevesu!
💡 Zapomni si: Čeprav hrana ne gre skozi jetra in trebušno slinavko, sta ta organa ključna "pomočnika" prebave!
Zadnji del poti in koristni nasveti
V debelem črevesu se zgodi predvsem absorpcija vode iz neprebavljenih ostankov. Tu živijo tudi koristne bakterije, ki proizvajajo vitamine. Ostanki se zgostijo v blato, ki se shrani v danki in nato izloči.
Za zdravo prebavo je ključno, da ješ počasi in hrano dobro prežveciš. S tem pomagaš mehanski prebavi že v ustih. Pij tudi dovolj vode in jej hrano z vlakninami (sadje, zelenjava) - čeprav vlaknine niso prebavljive, pomagajo pri rednem odvajanju.
Zapomni si glavno pot: usta → požiralnik → želodec → tanko črevo → debelo črevo → danka. Mehanska prebava poteka v ustih in želodcu, kemična pa v ustih, želodcu in predvsem tankem črevesu.
💡 Za test: Ogljikovi hidrati se začnejo prebavljati v ustih, beljakovine v želodcu, maščobe pa šele v tankem črevesu!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content in Naravoslovje
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Kako potuje hrana skozi naše telo?
Si se kdaj vprašal, kaj se zgodi s hrano, ko jo pograziš? Prebavila so kot tovarna v tvoje telo, ki hrano pretvori v energijo in hranilne snovi. Brez njih naše celice ne bi dobile "goriva" za rast, učenje in gibanje!
Osnove prebave
Verjetno misliš, da je prebava preprosta - pograziš in končano. V resnici pa je to neverjeten proces, kjer tvoje telo hrano razgradi na drobne delčke, ki jih lahko uporabi.
Obstajata dve vrsti prebave. Mehanska prebava pomeni fizično drobljenje (kot grizenje z zobmi), kemična prebava pa uporablja posebne "pomagače" - encime. Ti encimi so kot majhni delavci, ki razgrajujejo različne vrste hrane.
Tvoje telo potrebuje tri glavne hranilne snovi: ogljikove hidrate za energijo (kruh, testenine), beljakovine za rast (meso, jajca) in maščobe za energijo in gradnjo celic (olja, maslo). Ko so te snovi prebavljene, se absorpcija - torej vstop hranil v kri - poskrbi, da pridejo do vseh celic v telesu.
💡 Dobro je vedeti: Absorpcija se zgodi samo v tankem črevesu - to je edino mesto, kjer hranila lahko pridejo v kri!
Sign up to see the contentIt's free!
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Pot hrane skozi telo
Hrana potuje po dolgi "cevi" skozi tvoje telo - od ust do zadnjika. Vsak del te prebavne cevi ima svojo posebno nalogo, tako kot postaje na proizvodnji čokolade.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
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Prvi del poti: od ust do želodca
V ustih se prebava šele začne. Tvoji zobje mehano drobijo hrano, medtem ko slina z encimom amilaza že začne razgrajevati škrob iz kruha ali testenin. Jezik oblikuje grižljaj, ki ga lahko pogoTneš.
Po požiralniku hrana potuje z zanimivim gibanjem, imenovanim peristaltika - mišice se krčijo in potiskajo hrano navzdol. Poklopec pa zapre pot v sapnik, da ne zadihaš hrane!
Želodec deluje kot močna mešalna mašina. Njegove stene se krčijo in mešajo hrano, medtem ko želodčna kislina ubija bakterije in encim pepsin začne razgrajevati beljakovine. Rezultat je gosta tekočina, imenovana himus.
💡 Pozor: Pogosta napaka je misliti, da se vsa prebava zgodi v želodcu. V resnici se tam samo začne prebava beljakovin!
Sign up to see the contentIt's free!
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Tanko črevo - glavni junak
Tanko črevo je pravi junak prebave! Tu se zgodi večina kemične prebave in VSA absorpcija hranil. Predstavljaj si ga kot 6 metrov dolgo "super tovarno".
Dva pomembna organa pošljeta svoje "sokove" v tanko črevo. Trebušna slinavka proizvaja močne encime, ki dokončno prebavijo vse tri vrste hranil. Jetra pa proizvajajo žolč (ki ni encim!), ki razbije velike kaplje maščob na manjše.
Notranja stena tankega črevesa ima posebne izrastke - črevesne resice. Te so kot majhne prstke, ki močno povečajo površino za absorpcijo. Prebavljene hranilne snovi tako hitro prehajajo v kri.
Poglej si primer sendviča s sirom: škrob iz kruha se spremeni v sladkorje, beljakovine iz sira v aminokisline, maščobe pa v maščobne kisline. Vse to se absorpcija v tankem črevesu!
💡 Zapomni si: Čeprav hrana ne gre skozi jetra in trebušno slinavko, sta ta organa ključna "pomočnika" prebave!
Sign up to see the contentIt's free!
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Zadnji del poti in koristni nasveti
V debelem črevesu se zgodi predvsem absorpcija vode iz neprebavljenih ostankov. Tu živijo tudi koristne bakterije, ki proizvajajo vitamine. Ostanki se zgostijo v blato, ki se shrani v danki in nato izloči.
Za zdravo prebavo je ključno, da ješ počasi in hrano dobro prežveciš. S tem pomagaš mehanski prebavi že v ustih. Pij tudi dovolj vode in jej hrano z vlakninami (sadje, zelenjava) - čeprav vlaknine niso prebavljive, pomagajo pri rednem odvajanju.
Zapomni si glavno pot: usta → požiralnik → želodec → tanko črevo → debelo črevo → danka. Mehanska prebava poteka v ustih in želodcu, kemična pa v ustih, želodcu in predvsem tankem črevesu.
💡 Za test: Ogljikovi hidrati se začnejo prebavljati v ustih, beljakovine v želodcu, maščobe pa šele v tankem črevesu!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Most popular content in Naravoslovje
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Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user