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| Respiration is the movement of air in and out of the lungs
through the bronchi and bronchioles and their smaller branches.
It is a cyclic process of inspiration and expiration, i.e., bringing oxygen-containing air into the lungs and removing carbon dioxide. |
| Inspiration | |
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The movement of air into the lungs, an active process
involving muscular and thorax movement.
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| Expiration | |
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The move movement of air out of the lungs, normally a passive
process.
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| Pause | |
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A pause allows a build-up and distribution of air and
pressure.
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Alveolar Ventilation ¡@ |
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The amount of air which moves into and out of the alveoli and participates in gas exchange each time. It is equal to: ¡@ |
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| e.g. 15 x (400 - 150)ml = 3.75 L/min. | |
Interchange of Gases
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Control of Respiration
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Partly nervous (in brain stem) AND Partly chemical (chemoreceptor)
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You should see this:
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