The nasal cavity opens outside of the kind of openings that are known as _.
Correct answer: C. Nostrils
- A. Pharynx
- B. Bronchioles
- C. Nostrils
- D. None of these
Explanation
Nostrils are the openings to the nasal cavities that are on the face. These air-filled pockets are connected to nasal cavities of the nose.
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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