A complex cartilaginous structure surrounding the upper end of the trachea:
Correct answer: A. Larynx
- A. Larynx
- B. Esophagus
- C. pharynx
- D. Epiglotis
Explanation
Larynx is also known as voice box and has vocal cords for sound production. It i s made up of complex callilaginous structure surrounding the upper end of the trachea.
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