MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the following describing:-External intercostal muscles contract-Diaphragm contracts-becomes flatter-Ribs & sternum move upwards and outwards-Increase in chest cavity volume-Lung volume increases-Pulmonary air pressure decreases below atmospheric pressure-Atmospheric air is forced into the lungs
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Expiration
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Respiration
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Spirometer
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Inspiration
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Explanation:
Detailed explanation-1: -Being one of the accessory respiratory muscles, the external intercostals elevate ribs during forced inspiration. This increases the transverse and anteroposterior diameter of the lungs, which in turn decreases the intrapleural pressure. This process expands the lungs and facilitates the entry of air into them.
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