PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following does NOT happen during expiration?
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The diaphragm rises
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Inspiratory muscles contract
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Volume in the thoracic cavity decreases
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Air moves out of our lungs
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Explanation:
Detailed explanation-1: -The correct answer is a) external oblique. The external oblique muscles are not involved in inhalation (inspiration). In normal breathing, the diaphragm and external intercostal muscles contract, which increases the thoracic and lung volume, decreases intrapulmonary pressure, and air flows into the lungs.
Detailed explanation-2: -The diaphragm, sternocleidomastoid, and scalenes aid in inspiration when they contract. The external intercostals are involved in normal expiration, not forced.
There is 1 question to complete.