Which of the following is occurring if the following pressures are being measure

Question

Which of the following is occurring if the following pressures are being measured? transpulmonary pressure = 15 mmHg intrapleural pressure = 765 mmHg atmospheric pressure = 755 mmHg intrapulmonary pressure = 750 mmHg forced expiration forced inspiration tidal expiration tidal inspiration In assessing a mechanical prototype to demonstrate lung function, it is suggested that the final version of synthetic material will need to be easier to inflate easier to deflate in order to be cost effective. Which will need to be true? more compliant and more elastic less compliant and less elastic less compliant and more elastic more compliant and less elastic Due to acute trauma and resulting damage of the diaphragm, the _____ will need to become more active in order to aid someone during _____. rectus abdominis; inspiration sternocleidomastoid and parasternal muscles; expiration external intercostals; expiration scalenes and pectoralis minor; inspiration

Explanation / Answer

I shall anwer the first question.

Ans is a. Forced expiration.

Normally intrapleural pressure is less than atmospheric pressure. During forced expiration, intrapleural pressure exceeds atmospheric pressure, but lungs dont collapse because intrapulmonary pressure also increases. Forced expiration tends to increase airway resistance.

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