Cricoid cartilage

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Cricoid Cartilage

The Cricoid Cartilage (pronounced: /ˈkraɪ.kɔɪd ˈkɑːr.tɪl.ɪdʒ/) is a significant part of the larynx or voice box. It is the only complete ring of cartilage around the trachea and plays a crucial role in the respiratory system.

Etymology

The term "Cricoid" is derived from the Greek word "krikoeides," which means "ring-like." This is due to the ring-like shape of the cricoid cartilage.

Anatomy

The cricoid cartilage is located below the thyroid cartilage and above the trachea. It is shaped like a signet ring, with the broad part (lamina) facing posteriorly and the narrow part (arch) facing anteriorly. The cricoid cartilage forms the base of the larynx and provides support to the posterior part of the larynx.

Function

The primary function of the cricoid cartilage is to provide support and structure to the larynx and maintain the patency of the airway. It also serves as the attachment site for muscles, ligaments, and other structures involved in the movement of the larynx and vocal cords.

Related Terms

  • Larynx: The hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
  • Thyroid Cartilage: The largest of the nine cartilages that make up the laryngeal skeleton, the cartilage structure in and around the trachea that contains the larynx.
  • Trachea: The large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.

External links

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