10 Questions
What is the name of the structure that connects the nasal and oral cavities to the larynx?
Pharynx
What happens when the chest's capacity increases during ventilation?
Air enters through the trachea, inflating the lungs
What is the function of the turbinate bones in the nasal passages?
Increase the mucous membrane surface and slightly obstruct the air flow
Where is the nasopharynx located?
Posterior to the nose and above the soft palate
What is the function of the pharynx?
Connect the nasal and oral cavities to the larynx
What is the main cause of hypoxia after thoracic or abdominal surgery and most types of respiratory failure?
Shunting of blood
Which type of alveolar cells secrete surfactant, a phospholipid that prevents alveolar collapse?
Type II Alveolar cells
What is the result of severe hypoxia when the amount of shunting exceeds 20%?
Severe hypoxia
What causes a ventilation–perfusion V ̇/Q ̇ imbalance in the lung?
Inadequate ventilation, inadequate perfusion, or both
What is the filling of the pulmonary capillaries with blood known as?
Perfusion
Test your knowledge of the respiratory system with this quiz on lung anatomy and ventilation. Explore the function of the thoracic cage and diaphragm in breathing, and understand the process of inspiration and expiration.
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