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11 Jul 2025
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Year 7 Science: Breathing, Respiration, and Heart Function Notes
Amelia :))
@amelia.ks3.revision
Heart Function and Circulatory System
This page expands on the heart's function and the circulatory system, providing in-depth information relevant to The heart bbc bitesize KS3 and The heart gcse Biology AQA curricula. It details the path of blood through the heart, emphasizing the role of each chamber in the process.
The page begins by explaining how oxygenated blood moves from the lungs into the left atrium, then to the left ventricle, before being pumped to the body. This process is crucial for understanding What are the 7 main functions of the heart.
Highlight: The left ventricle has a thicker wall than the right ventricle because it needs to create higher blood pressure to pump blood around the entire body.
The concept of pulse rate is introduced, defined as the number of heart contractions felt per minute. This ties into the broader understanding of heart function and circulatory health.
The page then delves into the structure and function of blood vessels, including capillaries, arteries, and veins. Each type of blood vessel is described in terms of its wall thickness and role in blood circulation.
Vocabulary: Capillaries are tiny blood vessels with walls one cell thick, allowing for efficient gas exchange and nutrient transfer.
Moving on to the skeletal system, the page outlines the main functions of the skeleton, addressing the question What are bones made of 7th grade science? The skeleton's roles in movement, protection, and support are explained, with specific examples provided.
Example: The cranium protects the brain, while the ribs protect the lungs and heart, demonstrating the skeleton's protective function.
Major bones in the skeleton are listed, including the clavicle, ribs, vertebrae, and femur, providing a comprehensive overview of skeletal anatomy.
The page concludes with a brief section on drugs, both legal and illegal, and their effects on the body. This information is particularly relevant for health education in the context of Year 7 science breathing and respiration worksheets.
Definition: A drug is defined as a substance that changes the way the body works, encompassing both medicinal and recreational substances.
The page provides examples of legal and illegal drugs, as well as their potential effects on the body, offering valuable information for student understanding of drug impacts on health and bodily functions.
Breathing and Respiration
This page covers the fundamentals of breathing and respiration, essential topics in Year 7 science breathing and respiration notes. The process of breathing, also known as ventilation, is explained in detail, highlighting the role of intercostal muscles and the diaphragm in this process.
Definition: Breathing is the process of inhaling oxygen and exhaling carbon dioxide, facilitated by the movement of the ribs and diaphragm.
The page also delves into the concept of respiration, describing it as a chemical reaction involving oxygen and glucose to produce carbon dioxide and water. This process is crucial for energy production in cells.
Highlight: Respiration is a chemical reaction that occurs in cells to release energy, using oxygen and glucose to produce carbon dioxide and water.
Gas exchange, a key component of the respiratory system ks3 curriculum, is introduced as the process where one gas is exchanged for another in the lungs. This process is vital for supplying oxygen to the body and removing carbon dioxide.
The structure and function of muscle tissues are also discussed, emphasizing their role in breathing and other bodily functions. The page explains how muscle cells contain long strands that allow them to contract and relax, changing their shape and length.
Vocabulary: Mitochondria are structures within cells where aerobic respiration occurs, releasing energy for muscle contraction and relaxation.
The circulatory system is briefly introduced, mentioning the components of blood such as red and white blood cells, platelets, and plasma. The role of hemoglobin in transporting oxygen is highlighted, connecting to the Circulatory system bbc Bitesize KS3 content.
Finally, the page provides a detailed diagram of the heart, labeling its main parts including the atria, ventricles, and major blood vessels. This serves as an excellent resource for students studying Year 7 science heart function and anatomy notes.
Example: The heart diagram shows how deoxygenated blood enters the right atrium via the vena cava, moves to the right ventricle, and is then pumped to the lungs to collect oxygen.
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4.9/5
App Store
4.8/5
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. 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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. 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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Year 7 Science: Breathing, Respiration, and Heart Function Notes
Amelia :))
@amelia.ks3.revision
The document provides an overview of key concepts in Year 7 science breathing and respiration, covering the respiratory system, heart function, and skeletal system. It includes detailed information on:
- The process of breathing and gas exchange
- The structure and... Show more
Heart Function and Circulatory System
This page expands on the heart's function and the circulatory system, providing in-depth information relevant to The heart bbc bitesize KS3 and The heart gcse Biology AQA curricula. It details the path of blood through the heart, emphasizing the role of each chamber in the process.
The page begins by explaining how oxygenated blood moves from the lungs into the left atrium, then to the left ventricle, before being pumped to the body. This process is crucial for understanding What are the 7 main functions of the heart.
Highlight: The left ventricle has a thicker wall than the right ventricle because it needs to create higher blood pressure to pump blood around the entire body.
The concept of pulse rate is introduced, defined as the number of heart contractions felt per minute. This ties into the broader understanding of heart function and circulatory health.
The page then delves into the structure and function of blood vessels, including capillaries, arteries, and veins. Each type of blood vessel is described in terms of its wall thickness and role in blood circulation.
Vocabulary: Capillaries are tiny blood vessels with walls one cell thick, allowing for efficient gas exchange and nutrient transfer.
Moving on to the skeletal system, the page outlines the main functions of the skeleton, addressing the question What are bones made of 7th grade science? The skeleton's roles in movement, protection, and support are explained, with specific examples provided.
Example: The cranium protects the brain, while the ribs protect the lungs and heart, demonstrating the skeleton's protective function.
Major bones in the skeleton are listed, including the clavicle, ribs, vertebrae, and femur, providing a comprehensive overview of skeletal anatomy.
The page concludes with a brief section on drugs, both legal and illegal, and their effects on the body. This information is particularly relevant for health education in the context of Year 7 science breathing and respiration worksheets.
Definition: A drug is defined as a substance that changes the way the body works, encompassing both medicinal and recreational substances.
The page provides examples of legal and illegal drugs, as well as their potential effects on the body, offering valuable information for student understanding of drug impacts on health and bodily functions.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Breathing and Respiration
This page covers the fundamentals of breathing and respiration, essential topics in Year 7 science breathing and respiration notes. The process of breathing, also known as ventilation, is explained in detail, highlighting the role of intercostal muscles and the diaphragm in this process.
Definition: Breathing is the process of inhaling oxygen and exhaling carbon dioxide, facilitated by the movement of the ribs and diaphragm.
The page also delves into the concept of respiration, describing it as a chemical reaction involving oxygen and glucose to produce carbon dioxide and water. This process is crucial for energy production in cells.
Highlight: Respiration is a chemical reaction that occurs in cells to release energy, using oxygen and glucose to produce carbon dioxide and water.
Gas exchange, a key component of the respiratory system ks3 curriculum, is introduced as the process where one gas is exchanged for another in the lungs. This process is vital for supplying oxygen to the body and removing carbon dioxide.
The structure and function of muscle tissues are also discussed, emphasizing their role in breathing and other bodily functions. The page explains how muscle cells contain long strands that allow them to contract and relax, changing their shape and length.
Vocabulary: Mitochondria are structures within cells where aerobic respiration occurs, releasing energy for muscle contraction and relaxation.
The circulatory system is briefly introduced, mentioning the components of blood such as red and white blood cells, platelets, and plasma. The role of hemoglobin in transporting oxygen is highlighted, connecting to the Circulatory system bbc Bitesize KS3 content.
Finally, the page provides a detailed diagram of the heart, labeling its main parts including the atria, ventricles, and major blood vessels. This serves as an excellent resource for students studying Year 7 science heart function and anatomy notes.
Example: The heart diagram shows how deoxygenated blood enters the right atrium via the vena cava, moves to the right ventricle, and is then pumped to the lungs to collect oxygen.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and 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.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. 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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. 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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user