The Flow-Type Plethysmograph Differs from the Constant Volume (Variable-Pressure)plethysmograph in Which

question 19

Multiple Choice

The flow-type plethysmograph differs from the constant volume (variable-pressure) plethysmograph in which of the following ways?

• A) Forced expiratory maneuvers can be performed with the door closed.
• B) Flow boxes must be rigorously air-tight.
• C) Thoracic gas volume cannot be measured directly.
• D) Airway resistance can be measured in small children.

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Definitions:

Systems Theory

A theory proposing that multiple interacting factors generate all behaviour, and that the effects of these factors are bidirectional; that is, the influence of each factor on another changes the other factors, which in turn then influence the original factor. The overall effect of these influences is said to be greater than the sum of the influence of each of the factors.

Biopsychosocial Model

A holistic approach to health and illness that considers biological, psychological, and social factors.

Oedipal Complex

A concept in psychoanalytic theory referring to a child's feeling of desire for their opposite-sex parent and jealousy and rivalry with their same-sex parent.