| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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The chest cavity from the diaphragm up is called the Thorax. |
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What part of the human body is the thorax? |
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The ribs form a stiff boundary to the thorax. |
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What is the function of the ribs? |
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The rib cage, intercostal muscles and diaphragm are used to breathe. |
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What parts of the body are needed to ventilate the lungs in breathing? |
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To move air into the lungs the rib cage is moved out and up by the intercostal muscles contracting. The diaphragm contracts and sinks. |
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What happens to increase the volume of the lungs? |
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The increase in the volume of the lungs, reduces the air pressure in the lungs to lower than the air outside, pulling air particles into the lungs. |
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How does the increase in lung volume cause breathing in? |
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To move air out of the lungs the rib cage is moved in and down by the intercostal muscles relaxing. The diaphragm relaxes and rises. |
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What happens to decrease the volume of the lungs? |
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The decrease in the volume of the lungs, increases the air pressure in the lungs to lower than the air outside, pushing the air particles out of the lungs. |
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How does the decrease in lung volume cause breathing out? |
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When there is a difference in pressure between the air around the nose and the air in the lungs, particles will 'diffuse' from the area of high pressure the area of lower pressure. |
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How does air pressure make air particles move? |
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Make simple measurements of lung volume. |
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How could you measure lung volume? Use the lung volume bags. |
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