Exam 11: The Blood

A person has a tidal volume of 400 mL/breath, a respiratory rate of 14 breaths/minute, and an anatomic dead space volume of 120 mL. What is her pulmonary ventilation rate?

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) a.vital capacity b.respiratory rate c.FEV₁ d.tidal volume e.residual volume f.total lung capacity g.functional residual capacity h.alveolar ventilation i.pulmonary ventilation j.inspiratory reserve volume k.expiratory reserve volume l.inspiratory capacity m.anatomic dead space volume -extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Which of these statements correctly describes the apneustic centre?

An increase in airway resistance and an increase in alveolar surface tension both increase the work of breathing.

O₂ moves from the alveoli to the blood by active transport.

For inspiration to occur, the intra-alveolar pressure must be lower than the atmospheric pressure.

What happens when intra-alveolar pressure becomes greater than atmospheric pressure?

____________________ is a respiratory disease characterized by collapse of the smaller airways and a breakdown of alveolar walls.

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) a.vital capacity b.respiratory rate c.FEV₁ d.tidal volume e.residual volume f.total lung capacity g.functional residual capacity h.alveolar ventilation i.pulmonary ventilation j.inspiratory reserve volume k.expiratory reserve volume l.inspiratory capacity m.anatomic dead space volume -respiratory rate × (tidal volume - dead space volume)

Which of the following does NOT happen during inspiration?

Which of these statements correctly describes the dorsal respiratory group (DRG)?

Intrapleural pressure normally does not equilibrate with the intra-alveolar pressure.

The vocal folds are found in the ____________________, among the respiratory passages.

The DRG consists mostly of ____________________ neurons.

Alveolar P_O2 is higher following inspiration than following expiration.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) a.vital capacity b.respiratory rate c.FEV₁ d.tidal volume e.residual volume f.total lung capacity g.functional residual capacity h.alveolar ventilation i.pulmonary ventilation j.inspiratory reserve volume k.expiratory reserve volume l.inspiratory capacity m.anatomic dead space volume -amount of air that is available for exchange of gases with the blood per minute

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) a.vital capacity b.respiratory rate c.FEV₁ d.tidal volume e.residual volume f.total lung capacity g.functional residual capacity h.alveolar ventilation i.pulmonary ventilation j.inspiratory reserve volume k.expiratory reserve volume l.inspiratory capacity m.anatomic dead space volume -minimum volume of air remaining in the lungs after maximal expiration

Approximately what percentage of oxygen is transported in the blood dissolved in free form?

At the end of inspiration and at the end of expiration, intra-alveolar pressure is always equal to atmospheric pressure.