Why Would a Collapsed Right Lung,due to a Pneumothorax,also Collapse

question 23

Multiple Choice

Why would a collapsed right lung,due to a pneumothorax,also collapse the left lung?

• A) The mediastinum is a mobile rather than a rigid partition between the two pleural sacs, thereby allowing the increased pressure in the side of the chest that is open to push the heart and other mediastinal structures toward the intact side, where they can exert pressure on the left lung.
• B) Subatmospheric pressure increases from its normal level and thereby moves from high pressure area (right lung) to low pressure area (left lung).
• C) When intrathoracic pressure increases, the mediastinum softens and thereby allows the increased pressure in the side of the chest that is open to push the heart and mediastinal structures toward the intact side, where they can exert pressure on the left lung.
• D) Intrathoracic pressure increases from its subatmospheric level to an atmospheric level, thereby allowing the pressure within the chest to increase in proportion to the volume of the thorax.

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Definitions:

Concentration Ratio

A measure used in economics to assess the degree of market concentration, often used to identify the presence of monopolies or oligopolies.

Market Share

The share of a market that a specific company or product holds, commonly described as a proportion of the market's overall sales.

Industry X

A placeholder term used to refer to a specific, unidentified industry or sector within the economy.

Oligopolies

Market structures characterized by a small number of firms controlling a large proportion of the market share, often leading to limited competition.