MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is TRUE about Quiet Breathing?
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muscle in diaphragm contracts and chest wall, spatial lung volume increase (Boyles Law)
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muscle in diaphragm relax and chest wall, spatial lung volume increase (Boyles Law)
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -From a functional point of view, there are three groups of respiratory muscles: the diaphragm, the rib cage muscles and the abdominal muscles. Each group acts on the chest wall and its compartments, i.e. the lung-apposed rib cage, the diaphragm-apposed rib cage and the abdomen.
Detailed explanation-2: -During quiet breathing, the predominant muscle of respiration is the diaphragm. As it contracts, pleural pressure drops, which lowers the alveolar pressure, and draws air in down the pressure gradient from mouth to alveoli.
There is 1 question to complete.