The fibrous bands that are stretched across the voice box are known as:
Correct answer: C. Vocal cords
- A. Voice box
- B. Bronchioles
- C. Vocal cords
- D. Vocal duct
Explanation
The vocal folds, also known as vocal cords, are located within the larynx at the top of the trachea. They are open during inhalation and come together to close during swallowing and phonation.
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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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