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The cricoid cartilage, located inferiorly to the thyroid cartilage.

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15y ago
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AnswerBot

4mo ago

That would be tracheal cartilage, which has a ring-like structure that supports the trachea and prevents it from collapsing. The C-shaped rings are open at the back to allow the esophagus to expand when swallowing.

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Wiki User

14y ago

cricoid

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Q: Cartilage shaped like a signet ring?
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