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Pulmonary Ventilation

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Pulmonary Ventilation Define pulmonary ventilation ️️the process by which air moves in and out of lungs What is the preferred way of breathing? ️️through the nasal What happens to air through the nasal passageway? ️️air is warmed and humidified; cleaned by the turbinates How d...

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  • October 29, 2024
  • 3
  • 2024/2025
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Pulmonary Ventilation

Define pulmonary ventilation ✔️✔️the process by which air moves in and out of lungs



What is the preferred way of breathing? ✔️✔️through the nasal



What happens to air through the nasal passageway? ✔️✔️air is warmed and humidified; cleaned by
the turbinates



How does air travel starting from the nose/mouth? ✔️✔️nose/mouth --> pharynz --> larynx -->
trachea --> bronchial tree



Where does air exchange occur? ✔️✔️respiratory bronchioles and alveoli



What muscle are involved with inspiration? ✔️✔️diaphragm and external intercostal muscles (SCM
and scalenes with heavy exercise)



Describe the process of inspiration ✔️✔️volume in lungs decreases --> air rushes into the lungs



What way does air move? ✔️✔️areas of high pressure to low pressure



What muscles are involved with expiration? ✔️✔️internal intercostal muscles; assisted by latisimus
dorsi, quadratus lumborum and diaphragm



Describe the process of expiration? ✔️✔️increase pressure in the lungs --> air rushes out of the lungs



What can the volume of air in the lungs be measured by? ✔️✔️spirometry

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