Respiratory System and Gas Exchange notes
77 notes by 69 users · Page 1 of 2
This page gathers notes on breathing, gas exchange surfaces and lung disease. It is for school students revising these topics and teachers preparing material. The collection contains over 60 notes made by more than 50 GoConqr users, mostly for secondary-level study. Choose a note to begin.
Notes
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breathing , gaseous exchange and respiration Study, draw and label over each diagram G.e.s. of fish G.e.s. of insects The gaseous exchange surface of an earthworm G.e.s. of an amoeba Breathing the mechanism 1. Define the term breathing 2. Outline the sequence of...
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How breathing works How we breathe:* Air is warmed, moistened & filtered as it travels through the mouth and nasal passages.* It then passes through the trachea and one of the two bronchi into one of the lungs.* After passing into the ma...
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Biology AQA 3.2.7 Gas Exchange Large Surface Area to volume ratio smal smaller diffusion pathway
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Lungs Lungs - how they work. Breathing in. Intercostal muscles contract Diaphragm muscles contract Rib cage moves up and out Elastic tissue stretches Diaphragm moves down Volume in lungs increases Pressure in lungs decrease...
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OCR Biology- AS- Exchange and Transport Module 2 Exchange and Transport1.2.1 Exchange Surfaces and Breathinga) Single celled and small organisms have a large volume:surface area ratio. This means that they do not need specialised area to exchange from becau...
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Biology 2.13 InsectsWaterproofing over body surfaces. Rigid outer skeleton and a waterproof cuticle over it.Small surface area to volume ratio. Minimise area water is lost.Gases move into trachea and tracheoles down concentration ...
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Lung disease Pulmonary Ventilation- The amount of air taken into the lungs in 1 minutePV= Tidal volume x ventilation rateTidal volume- volume of air in each breath (usually about 0.4dm3)Ventilation rate- number of breaths per...
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Gas exchange and breathing by CGP Gas exchange and breathing You need to get oxygen from the air into your bloodstream. You also need to get rid of carbon dioxide that is in your bloodstream. Funnily enough, this exchange of gases happens in your gas ...
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Haemoglobin Haemoglobin is a protein fouund in red bllod cells which has the capability to transport 4 molecules of oxygen. It is made up of four polypeptide chains each with one haem group. Partial pressure of oxygen is a measur...
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Lung diseases Asthma:Asthma is a common condition which can cause coughing, wheeziness and shortness of breath, It is caused by an inflammation of the airways for example the bronchi which carry air into and out of the lungs. When ...
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Gas Exchange Surfaces & Insects Gas exchange occurs over a gas exchange surface - boundary between the outside environment and the internal environment of the organism.Oxygen and carbon dioxide need to quickly diffuse across the surface.Gas exchange...
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Respiratory System The respiratory system.The body needs oxygen in the blood stream to feed the cells for respiration.It also needs to get rid of C02 from the blood.This all happens in the lungs when you breathe in and out. ThoraxThe th...
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Gas Exchange For survival an organism must exchange materials effectively with its environment. Examples of materials that need to be interchanged between an organism and its environment include: Respiratory gases Heat Nutri...
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Biology- Breathing Breathing In (inhalation/inspiration)1. Nervous impulses travel from the Medulla Oblongata...2. to the external intercostal muscles and diaphragm.3. The external intercostal muscles contract pulling the ribs upwards a...
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F211- Exchange and Transport- The Cardiac Cycle 1. When both the atria and the ventricles are relaxed, blood flows into the atria from the major veins.2. The blood flows through the atrioventricular valves into the ventricles.3. The atria contract simultaneously, p...
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Exchange in the gut B3 1.7 The food we eat is digested into small soluble molecules. In the small intestine these solutes arr absorbed into the blood. The villi line the inner surface of the small intestine and are the exchange surface for food...
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Exchange of materialss Diffusion The net movement of molecules from a area of high concentration of molecules to a area with a lower concentration of molecules. Osmosis
More Respiratory System and Gas Exchange resources
About respiratory system and gas exchange notes
GoConqr OriginalRespiratory system and gas exchange notes
These notes cover how air travels into the lungs, the features of gas exchange surfaces and the effects of lung disease. They also look beyond humans: one set of notes includes gas exchange in fish, insects, earthworms and amoebas.
Start with How breathing works for an overview of the path air takes into the lungs. Then read Gas Exchange to focus on features of exchange surfaces, including their size and thickness. Adaptations for Gas Exchange explores surface area and diffusion.
Working with the notes
After reading, write a short summary of each idea in your own words. Return to the notes when you want to check a detail, or switch to flashcards on the unit page to practise key terms. A quiz can help you check what you remember. Explore the notes and find a starting point that suits you.
Frequently asked questions
Which note is a good place to start?
How breathing works is a useful starting point if you want to follow the route air takes into the lungs. For a closer look at exchange surfaces, Gas Exchange describes features such as their size and thickness. You can read the notes in whichever order suits your revision.
Do the notes cover gas exchange beyond humans?
Yes. The collection includes notes on gas exchange in fish and insects, as well as the exchange surfaces of earthworms and amoebas. Adaptations for Gas Exchange also discusses surface area and diffusion, giving you another way to review ideas that apply across the topic.
Are these notes free to use?
Yes. Every note listed here is free to open and study without an account. The resources were made by GoConqr users. A free account also lets you save quiz scores and make your own quizzes, mind maps, flashcards and notes.