The Work of Breathing Normally Requires About 3% of Total

question 189

Multiple Choice

The work of breathing normally requires about 3% of total energy expenditure; this increases under all of the following situations except when:

• A) Elastic recoil is decreased.
• B) Resistance goes up.
• C) The partial pressure of oxygen increases in the air.
• D) Ventilation must be increased.
• E) Compliance is decreased.

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Definitions:

Psig

Pounds per square inch gauge. Gauge pressure is equivalent to psi, not psia.

Liquid Refrigerant

A substance in liquid form used in refrigeration cycles to absorb and remove heat from a space to cool it.

Ambient Temperatures

The temperatures of the air or environment in which equipment, devices, or materials are situated, affecting their performance and operational requirements.

High-Side

In electrical systems, refers to the part of a circuit that is at a higher potential relative to a common ground.