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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