If the lungs are not muscles themselves, how are they able to move (expand and contract)?What must happen to our chest cavity in order for us to exhale?
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- Explain the roles of the muscles involved during the inspiration and expiration phases of respiration. In which phase does the diaphragm contract?What do the collective action of the accessory muscles of expiration causes?Which of the following muscles contract so we can exhale MORE air? a. Diaphragm and External Obliques b. Internal and External Intercostal Muscles c. Diaphragm and Internal Intercostal Muscles d. Latissimus Dorsi and Diaphragm e. Diaphragm and External Intercostal Muscles
- Why does human speech typically take place during the expiratory phase of respiration? Consider the role of the inspiratory and expiratory muscles and the elastic recoil of the lungs.Please discuss below how the relaxation of smooth muscle will alter lung capacities, with special attention given to how relaxation will impact airway diameter, airway resistance, and oxygen uptake (inspiration/inhalation)What is the function of trachealis muscle?
- Explain the mechanics of breathing. How are muscles used to allow for inspiration and expiration?When the diaphragm and external intercostal muscles contract, which of the following actions does NOT occur? A. Air moves into lungs B. The diaphragm moves inferiorly C. The intrapulmonary pressure decreases D. The intrapleural pressure increases.List the muscles of respiration (both inspiratory and expiratory muscles) and explain their role in quiet and labored respiration