When the diaphragm and external intercostal muscles contract,

(a) Exhalation occurs.

(b) Intrapulmonary pressure increases.

(c) Intrapleural pressure decreases.

(d) The volume of the lungs decreases.

(e) The size of the thoracic cavity increases.

What three integrated steps are involved in external respiration?

Which of the following does not occur in internal respiration?

(a) Oxygen diffuses from the blood to the interstitial spaces.

(b) Carbon dioxide diffuses from the interstitial spaces to the blood.

(c) Hemoglobin binds more oxygen.

(d) Bicarbonate ions are formed in red blood cells.

(e) Chloride ions diffuse into red blood cells as bicarbonate ions diffuse out.

Gas exchange at the blood air barrier is efficient because

(a) The differences in partial pressure are substantial

(b) The gases are lipid soluble

(c) The total surface area is large

(d) Of all of these

What is the significance of

(a) Boyle's law, to the process of respiration?

What is the significance of

(b) Dalton's law, to the process of respiration?

What is the significance of

(c) Henry's law to the process of respiration?

What happens to the process of respiration when a person is sneezing or coughing?

What are the differences between pulmonary volumes and respiratory capacities? How are pulmonary volumes and respiratory capacities determined?

Cary hyperventilates for several minutes before diving into a swimming pool. After he enters and begins swimming underwater, he blacks out and almost drowns. What caused this to happen?

Why do individuals who are anemic generally not exhibit an increase in respiratory rate or tidal volume, even though their blood is not carrying enough oxygen?

Doris has an obstruction of her right primary bronchus. As a result, how would the oxygen–hemoglobin saturation curve for her right lung compare with that for her left?