Self-test questions: Chapter 32

. The volume of a given quantity of gas depends on both its temperature and its pressure.

True

False

. The amount of a gas in solution depends on the pressure of the gas phase.

True

False

. There are 23 generations of airways between the atmosphere and the alveoli.

True

False

. Regarding the airways and alveoli: Please select all that apply

The trachea and bronchi are prevented from collapsing by the cartilage in their walls.

The small diameter airways are the main sites of airways resistance.

The upper airways play an important role in protecting the lungs from airborne particles.

The bronchioles have no cartilage in their walls.

The alveoli are the only site of gas exchange.

. Which of the following statements regarding the respiratory system are correct?

The respiratory muscles contract spontaneously.

The phrenic nerve innervates the diaphragm

The smooth muscle of the bronchi and bronchioles is innervated only by parasympathetic fibres

Activation of parasympathetic fibres causes bronchoconstriction and dilatation of the bronchial blood vessels.

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