NBRC Cardiopulmonary Anatomy and Physiology 2

Question 1

The functional residual capacity (FRC) is the sum of which two lung volumes?

Accepted Answer

Expiratory reserve volume and residual volume

Answer

Tidal volume and inspiratory reserve volume

Answer

Inspiratory capacity and residual volume

Answer

Vital capacity and residual volume

Question 2

Hypoxic pulmonary vasoconstriction (HPV) serves to:

Accepted Answer

Divert blood away from poorly ventilated alveoli

Answer

Increase blood flow to poorly ventilated areas

Answer

Decrease pulmonary vascular resistance globally

Answer

Raise alveolar PO2 in well-ventilated regions

Question 3

Which of the following best describes anatomical dead space?

Accepted Answer

Conducting airways that do not participate in gas exchange

Answer

Alveoli that are ventilated but not perfused

Answer

The volume of gas remaining after maximal exhalation

Answer

Lung tissue destroyed by emphysema

Question 4

Surfactant is produced by which cell type?

Accepted Answer

Type II pneumocytes

Answer

Type I pneumocytes

Answer

Goblet cells

Answer

Clara cells

Question 5

A patient has a V/Q ratio of zero. This indicates:

Accepted Answer

Intrapulmonary shunt

Answer

Normal gas exchange

Answer

Dead space ventilation

Answer

Diffusion impairment

Question 6

The normal arterial pH range is:

Accepted Answer

7.35–7.45

Answer

7.20–7.30

Answer

7.30–7.35

Answer

7.45–7.55