Why Is Pectus Excavatum Is the End Result of Continued

question 8

Multiple Choice

Why is pectus excavatum is the end result of continued function of the upper respiratory and diaphragm breathing?

• A) The abdominal pressure is greater than that of the thoracic pressure because of the strength of the abdominals and weakness of the intercostals.
• B) The pull of the upper respiratory accessory muscles is unopposed.
• C) The intercostal do not sufficiently oppose the pull of the negative pressure in the thorax, causing a collapse.
• D) The pull of the diaphragm is less than that of the intercostals.

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Definitions:

Charles Tilly

A renowned scholar in the fields of sociology and political science, known for his contributions to our understanding of social movements, democracy, and the history of Europe.

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