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Updated Mar 16, 2026
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Skóra to nie tylko zewnętrzna powłoka ciała - to złożony... Show more

Twoja skóra składa się z trzech głównych warstw, z których każda ma swoje specjalne zadania. Naskórek to zewnętrzna warstwa zbudowana z dwóch części - martwej warstwy zrogowaciałej, która się złuszcza, oraz żywej warstwy rozrodczej z melanocytami chroniącymi przed UV.
Skóra właściwa to najgrubsza warstwa pełna włókien kolagenowych, naczyń krwionośnych i receptorów czucia. To tutaj znajdują się wszystkie ważne struktury odpowiedzialne za odczuwanie dotyku i regulację temperatury.
Tkanka podskórna składa się głównie z komórek tłuszczowych zwanych adipocytami. Grubość tej warstwy zależy od płci, diety i metabolizmu - stąd różnice w budowie ciała między ludźmi.
Skóra wytwarza też wiele przydatnych struktur: włosy chronią przed środowiskiem, paznokcie wzmacniają czucie dotyku, a gruczoły łojowe i potowe dbają o nawilżenie i chłodzenie ciała. Gruczoły mlekowe u kobiet produkują pokarm dla niemowląt.
💡 Ciekawostka: Melanocyty w skórze działają jak naturalny krem z filtrem - produkują ciemny barwnik melaninę, który blokuje szkodliwe promieniowanie UV!

Skóra pełni siedem kluczowych funkcji w organizmie. Funkcja termoregulacyjna działa przez pocenie się i rozszerzanie naczyń krwionośnych - dlatego czerwienisz się, gdy jest gorąco. Funkcja ochronna to bariera przed bakteriami, urazami i utratą wody dzięki keratynom i niskiemu pH.
Skóra działa też jak receptor - odbiera bodźce dotykowe i termiczne. Może wydalać szkodliwe substancje przez pot i wydzielać różne substancje jak łój czy mleko.
Tkanka podskórna ma trzy główne funkcje: termoizolacyjną (chroni przed utratą ciepła), amortyzującą (chroni przed urazami) i zapasową (magazynuje energię w postaci tłuszczu).
Najciekawsza jest synteza witaminy D3 - pod wpływem słońca pochodna cholesterolu w skórze zmienia się w witaminę D3. Potem trafia do wątroby i nerek, gdzie powstaje aktywna forma - kalcytriol. Na ten proces wpływa pora roku, zachmurzenie, szerokość geograficzna i nawet karnacja skóry.
💡 Ważne dla zdrowia: Dlatego lekarze zalecają spędzanie czasu na słońcu (z umiarem!) - to naturalny sposób na dostarczenie organizmowi witaminy D potrzebnej do mocnych kości!
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.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Notatka przeznaczona jest dla osób na rozszerzeniu. Stworxona na podstawie podręcxnika Nowej Ery
App Store
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
Skóra to nie tylko zewnętrzna powłoka ciała - to złożony organ, który chroni nas przed bakteriami, reguluje temperaturę i nawet wytwarza witaminę D! Zrozumienie budowy skóry pomoże ci lepiej dbać o nią i zrozumieć, dlaczego jest tak ważna dla zdrowia.

Access to all documents
Improve your grades
Join milions of students
Twoja skóra składa się z trzech głównych warstw, z których każda ma swoje specjalne zadania. Naskórek to zewnętrzna warstwa zbudowana z dwóch części - martwej warstwy zrogowaciałej, która się złuszcza, oraz żywej warstwy rozrodczej z melanocytami chroniącymi przed UV.
Skóra właściwa to najgrubsza warstwa pełna włókien kolagenowych, naczyń krwionośnych i receptorów czucia. To tutaj znajdują się wszystkie ważne struktury odpowiedzialne za odczuwanie dotyku i regulację temperatury.
Tkanka podskórna składa się głównie z komórek tłuszczowych zwanych adipocytami. Grubość tej warstwy zależy od płci, diety i metabolizmu - stąd różnice w budowie ciała między ludźmi.
Skóra wytwarza też wiele przydatnych struktur: włosy chronią przed środowiskiem, paznokcie wzmacniają czucie dotyku, a gruczoły łojowe i potowe dbają o nawilżenie i chłodzenie ciała. Gruczoły mlekowe u kobiet produkują pokarm dla niemowląt.
💡 Ciekawostka: Melanocyty w skórze działają jak naturalny krem z filtrem - produkują ciemny barwnik melaninę, który blokuje szkodliwe promieniowanie UV!

Access to all documents
Improve your grades
Join milions of students
Skóra pełni siedem kluczowych funkcji w organizmie. Funkcja termoregulacyjna działa przez pocenie się i rozszerzanie naczyń krwionośnych - dlatego czerwienisz się, gdy jest gorąco. Funkcja ochronna to bariera przed bakteriami, urazami i utratą wody dzięki keratynom i niskiemu pH.
Skóra działa też jak receptor - odbiera bodźce dotykowe i termiczne. Może wydalać szkodliwe substancje przez pot i wydzielać różne substancje jak łój czy mleko.
Tkanka podskórna ma trzy główne funkcje: termoizolacyjną (chroni przed utratą ciepła), amortyzującą (chroni przed urazami) i zapasową (magazynuje energię w postaci tłuszczu).
Najciekawsza jest synteza witaminy D3 - pod wpływem słońca pochodna cholesterolu w skórze zmienia się w witaminę D3. Potem trafia do wątroby i nerek, gdzie powstaje aktywna forma - kalcytriol. Na ten proces wpływa pora roku, zachmurzenie, szerokość geograficzna i nawet karnacja skóry.
💡 Ważne dla zdrowia: Dlatego lekarze zalecają spędzanie czasu na słońcu (z umiarem!) - to naturalny sposób na dostarczenie organizmowi witaminy D potrzebnej do mocnych kości!
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.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
36
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Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Practice Test ✓ Essay Outlines
Zrozumienie struktury i funkcji skóry, w tym naskórka, skóry właściwej oraz tkanki podskórnej. Omówienie chorób skóry, ich przyczyn oraz zasad higieny. Kluczowe informacje o roli skóry w termoregulacji, ochronie przed patogenami oraz wydzielaniu substancji. Idealne dla studentów medycyny i biologii.
Odkryj szczegółową budowę i funkcje skóry, w tym naskórek, skórę właściwą oraz ich wytwory. Dowiedz się o syntezie witaminy D3, higienie skóry oraz chorobach skórnych. Idealne dla studentów biologii i medycyny.
Zgłębiaj anatomię i funkcje skóry w tym szczegółowym opracowaniu. Dowiedz się o budowie naskórka, skórze właściwej oraz tkance podskórnej, ich rolach w ochronie organizmu, termoizolacji i mechanizmach regeneracyjnych. Odkryj także wytwory naskórka oraz ich funkcje. Idealne dla studentów biologii i medycyny.
budowa skóry, wytwory naskórka, funkcje skóry, synteza witaminy D3, choroby i higiena skóry
Zgłębiaj cechy kręgowców, ich ewolucję oraz mechanizmy termoregulacji. Dowiedz się o strukturze skóry, różnicach między organizmami ektotermicznymi i endotermicznymi oraz o unikalnych cechach anatomicznych kręgowców. Idealne dla studentów biologii i weterynarii.
Zgłębiaj świat płazińców, ich morfologię oraz cykle życiowe. Dowiedz się o różnych gatunkach, takich jak tasiemce i przywry, ich rolach jako pasożytów oraz mechanizmach przetrwania. Materiał zawiera szczegółowe informacje o budowie ciała, sposobach rozmnażania oraz cyklach rozwojowych. Idealne dla studentów biologii i zoologii.
Notatka przeznaczona jest dla osób na rozszerzeniu. Stworxona na podstawie podręcxnika Nowej Ery
App Store
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