If the Thoracic Wall Is Punctured, Air Leaking in Will

question 78

Multiple Choice

If the thoracic wall is punctured, air leaking in will cause the lung to collapse. Thus, in the normal, intact thoracic cavity,

• A) lung expansion is passive.
• B) air pressure is the same as it is on the outside.
• C) a slight suction keeps lungs inflated.
• D) breathing movements keep lungs inflated.
• E) Both a and b

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Definitions:

Leisure

Free time spent away from business, work, and domestic chores, often used for relaxation, recreation, or hobbies.

Substitution Effect

The effect of a change in the price of a good or service on the demand for that good or service, due to consumers switching to or from substitutes.

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Time spent away from work and other obligations, used for relaxation or chosen activities.