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6:28Which of the following does not affect the efficiency of pulmonary gas exchange?
a. The surface area of the respiratory membrane
b. The degree of match of ventilation to perfusion
c. The percent saturation of hemoglobin
d. The thickness of the respiratory membrane
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The tidal volume is the amount of air left in the lungs after maximal expiration.
Henry's law states that the degree to which a gas dissolves in a liquid is determined by its:
a. Partial pressure
b. Solubility
c. Surface tension
d. Both a and b are correct
e. All of the above are correct
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The vital capacity is the total amount of exchangeable air.
Match each term with the correct definition.
Airway resistance
Surface tension
Surfactant
Pulmonary compliance
V/Q ratio
a. A detergent-like chemical secreted by bronchial smooth muscle that reduces surface tension
b. The matching of ventilation to perfusion
c. Largely determined by the diameter of the airways
d. Caused by the formation of hydrogen bonds between water molecules
e. Determined by the surface tension of the alveoli, the elastic tissue of the lungs, and the condition of the chest wall
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The functional residual capacity is the volume of air normally left in the lungs after a tidal expiration.
