题目内容

单选____ in the nasal cavity can increase the air turbulence

A. nasal conchae
B. nasal septum
C. paranasal sinuses
D. palate

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单选____ serve(s) as a food and air passageway

A. Trachea
B. Larynx
C. Pharynx
D. Lungs

单选____ is the location of the vocal cords

A. Pharynx
B. Larynx
C. Trachea
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单选____ covers the larynx and trachea during swallowing, which provides protection against food and liquid being inhaled into the lungs

A. Epiglottis
B. Glottis
C. Thyroid cartilage
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单选Each bronchiole terminates in a small group of air sacs, called ___

A. hilum
B. bronchi
C. respiratory membrane
D. alveoli