The following structures are found in the walls of the gas exchange system. 1. Capillaries 2. Cilia

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The following structures are found in the walls of the gas exchange system.

1. Capillaries

2. Cilia

3. Elastic fibres

4. Goblet cells

5. Smooth muscle cells

Which would be found in the lining of an alveolus?

A. 1 and 3

B. 1, 2 and 3

C. 2 and 5

D. 4 and 5

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Cambridge International AS And A Level Biology

ISBN: 9781107636828

4th Edition

Authors: Mary Jones, Richard Fosbery, Jennifer Gregory, Dennis Taylor

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