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.
Correct Answer:
Verified
Correct Answer:
Verified
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