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Cricoid cartilage

Cartilago cricoidea · Prstencová chrupavka

Joints & cartilage

Looks like

A signet-ring-shaped cartilage below the thyroid cartilage, the only complete ring in the airway.

What it does

Keeps the airway open and forms the base of the voice box.

Keeping it well

The site of emergency front-of-neck airway access through the membrane above it; narrowing after long intubation causes noisy breathing.

Related conditions