Incorrect. Contraction of the diaphragm is necessary for the normal inhalation. Normal exhalation during quiet breathing depends on which factors? Increasing the volume of the pulmonary alveoli. The inward pull of surface tension. None of these answers is a factor assisting normal exhalation. Contraction of the diaphragm. Contraction of abdominal muscles.
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In order to inhale, the diaphragm needs to contract. Show more…
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which of the following is the muscle action that results in exhalation and causes the air pressure inside the lungs to be higher than -relaxation of the external intercostals -contraction of external intercostals -contraction of the diaphragm -relaxation of the diaphragm
Adi S.
Q1. Normal, quiet exhalation needs which of the following muscles to contract? a. scalenes b. diaphragm c. intercostals d. none of the above Q2. Which of the following pressure differences will keep your lungs inflated at rest? a. pleural cavity pressure < pressure inside lung b. pleural cavity pressure > pressure inside lung c. pleural cavity pressure < atmospheric pressure d. pleural cavity pressure > atmospheric pressure
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