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Exercise and reference answers

Questions

1. Answer

   1

   Question

   Millimetre limit for direct diffusion breathing

2. Answer

   1

   Question

   Cells thick that an alveolar wall usually is

3. Answer

   100

   Question

   Alveolar sacs at the end of each duct, about

4. Answer

   20

   Question

   Lowest count of alveoli in one alveolar sac

5. Answer

   300

   Question

   Millions of alveoli in one human lung, about

6. Answer

   2

   Question

   Lungs an adult human has

Instructions

Type the number only.

Explanation