Signet ring cartilage of larynx is:

Cricoid

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Arytenoid

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Thyroid

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All of the above

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Solution

The correct option is A Cricoid
The cricoid cartilage is a ring of hyaline cartilage located at the inferior aspect of the larynx and is the only complete ring of cartilage around the trachea. It has the shape of a signet ring, with a broad portion posterior to the airway (lamina of cricoid cartilage) and a narrower portion circling anteriorly (arch of cricoid cartilage).

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