When a trapeze artist hangs by the knees, the ventilation/perfusion (V.A/Q.) ratio is:

When a trapeze artist hangs by the knees, his alveolar ventilation (V.A) is:

The parameter that provides the maximal stimulus to the central chemoreceptor ACUTELY is:

The accompanying Figure 5 is an O2-CO2 diagram for a normal individual. Which point most closely corresponds to the composition of inspired air?    

The neurons that innervate the primary muscles of inspiration are controlled by the _____ and have their cell bodies located in the _____.

Surfactant is made by ____________, and the greater the surface density of surfactant molecules at the air-water interface, the __________ the surface tension.

Regional hypoxia in the lung causes pulmonary arterioles and venules to:

The body is able to respond to a sustained metabolic acidosis by producing a compensatory:

In the accompanying Figure 1, the point at pH 7.4/24 mM HCO3− represents the starting condition. Which letter most closely represents uncompensated respiratory alkalosis?   

What percentage of pulmonary surfactant is comprised specifically of the four surfactant apoproteins?