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Lung Structure

Lung Structure. Think of Fick’s Law. How are the alveoli adapted to carry out efficient gas exchange? Large surface area Thin walled Concentration gradient maintained Moist. Pulmonary Ventilation. This is the movement of air into and out of the lungs.

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Lung Structure

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  1. Lung Structure

  2. Think of Fick’s Law • How are the alveoli adapted to carry out efficient gas exchange? • Large surface area • Thin walled • Concentration gradient maintained • Moist

  3. Pulmonary Ventilation • This is the movement of air into and out of the lungs. • Ventilation is controlled by muscles, namely the… DIAPHRAGM and INTERCOSTAL MUSCLES

  4. Write Bullet Points in a table to show what happens in ventilation

  5. Measuring Pulmonary Ventilation • To work out how much air we breathe per minute we need to know 2 things… How much air we breathe in 1 breath (This is called the TIDAL VOLUME) How many times a minute we breathe (This is called the VENTILATION RATE)

  6. So… Pulmonary Ventilation (dm3min-1) Tidal Volume x Ventilation Rate = dm3 min-1 You may be expected to work this out so REMEMBER how!

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