Q: What part of the human body is known as the soundbox of our respiratory system?  

Answer: C

The larynx, also known as the voice box, is located in the neck and is made up of cartilage. It plays an important role in the production of sound by vibrating the vocal cords. This is why it is referred to as the soundbox of our respiratory system. Additionally, the larynx also helps in regulating pitch and volume of our voice. The epiglottis is a flap of cartilage that closes over the larynx when we swallow to prevent food from entering the respiratory system. Vocal gland, pharynx, and nasopharynx are not the correct answers.

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