Cricoid cartilage

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Larynx with muscles

The cricoid cartilage (lat. Cricoid cartilage , thereof derived Krikoid ) forms together with the thyroid cartilage , the two arytenoid cartilages and the epiglottis the (epiglottis) larynx skeleton . It consists of hyaline cartilage , is shaped like a signet ring and forms the lowest part of the larynx skeleton facing the trachea.

The anterior cricoid cartilage arch ( Arcus cartilaginis cricoideae ) thickens towards the rear to form a cricoid cartilage plate ( Lamina cartilaginis cricoideae ). The cricoid cartilage plate has a central ridge ( crista mediana ) and a joint surface on each side ( facies articularis arytenoidea ) for connection with the anterior cartilage. At the transition between the plates and rings, there is a joint surface ( facies articularis thyroidea ) on both sides to connect to the thyroid cartilage.

The ring is cartilage by both the mentioned joints and via belts ( cricothyroid ligament , ligamentum cricoarytenoideum connected) with the adjacent cartilage pieces. Various larynx muscles are attached to the cricoid cartilage :


In the Koniotomie the keys of the cricoid cartilage serves as a guide for the puncture or incision through the cricothyroid ligament .


  • Franz-Viktor Salomon: respiratory system. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 324-367.