Lesson: Chapter 6 — Human body processes

Gas exchange in the alveoli 3 of 4 Reset answers

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Question 3

Which is not a feature of a good respiratory surface?

A Well supplied with blood B Thick and dry C Thin D Moist

The right answer is the one marked above.

Thick and dry. A thick, dry surface would slow diffusion; the surface must be thin and moist.

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