WebAnatomy
Simple Questions about the Respiratory System #1

Respiratory Anatomy

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 1. Movement of air in and out of the lungs is called ventilation.


 2. The pharynx is located behind the oral cavity and between the nasal cavity and larynx.


 3. The vocal cords are located in the pharynx.


 4. The larynx connects directly to the oral cavity.


 5. The trachea is flexible, but contains hyaline cartilage that helps prevent it from collapsing.


 6. The bronchial tree consists of branched airways leading from the trachea to the microscopic air sacs in the lungs called alveoli.


 7. Primary bronchi are larger in diameter than secondary bronchi, which are larger in diameter than bronchioles.


 8. A young adult will typically have about 300 million alveoli.


 9. Alveoli contain simple columnar epithelial cells through which gases can easily be exchanged.


 10. Surfactant is a protein that reduces surface tension and decreases alveoli's tendency to collapse when lung volume is low.


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