Lesson: Chapter 6 — Human body processes

6.2. Breathing 2 of 5 Reset answers

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Question 2

In the bell-jar model, what does the rubber sheet represent?

A The ribs B The diaphragm C The lungs D The trachea

The right answer is the one marked above.

The diaphragm. Pulling it down enlarges the jar, as the flattening diaphragm enlarges the chest.

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