Cricoid cartilage

Cricoid cartilage is a major component of the larynx, also known as the voice box. It is the only complete ring of cartilage around the trachea and plays a crucial role in the opening and closing of the airway, as well as in the production of sound.

Anatomy

The cricoid cartilage is shaped like a signet ring, with the broad part (lamina) facing posteriorly and the narrow part (arch) facing anteriorly. It is located below the thyroid cartilage and above the trachea. The cricoid cartilage is connected to the thyroid cartilage by the cricothyroid ligament and to the first tracheal ring by the cricotracheal ligament.

Function

The primary function of the cricoid cartilage is to provide support to the larynx and maintain the patency of the airway. It also serves as a point of attachment for various muscles, ligaments, and membranes involved in the movement of the larynx and in the production of sound.

Clinical significance

Due to its location and function, the cricoid cartilage can be involved in various medical conditions and procedures. For example, cricoid pressure, also known as the Sellick maneuver, is a technique used in anesthesia to prevent regurgitation during the induction of anesthesia. Conditions such as cricoid chondritis and cricoid stenosis can also affect the cricoid cartilage.

See also

• Larynx
• Thyroid cartilage
• Trachea
• Cricoid pressure
• Cricoid chondritis
• Cricoid stenosis

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Cricoid_cartilage

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  Cricoid cartilage and surrounding structures
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  External view of the larynx
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  Detailed anatomy of the larynx
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  Illustration of the larynx
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  Larynx, pharynx, and surrounding structures
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  Muscles of the larynx
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  Larynx viewed from behind
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  Cricoid cartilage