Cricoid Cartilage


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Cricoid Cartilage

 

the unpaired cartilage of the larynx in terrestrial vertebrates and in man, a derivative of the fifth visceral arch. In mammals the broad part of the cricoid cartilage —the quadrate lamina—faces posteriorly; the narrow part—the arch—faces anteriorly. The cricoid cartilage is movably attached to the thyroid and arytenoid cartilages of the larynx above and to the first cartilage of the trachea below.

References in periodicals archive ?
(15) reported that the LMA mask tip was located below the cricoid cartilage at the C6 or C7 vertebra when CP was not applied and was at the C4 or C5 vertebra when CP was applied.
(8-10) These changes, along with a decrease in the adherent properties of the joint capsule, affect the precise movement of the arytenoid cartilage over the cricoid cartilage, which in turn ultimately affects vocal fold movement and quality of voice.
Caption: Figure 1: CT scan with axial sections showing enlargement and generalized sclerosis of the cricoid cartilage. Bone window where cricoid blast transformation becomes more evident.
A standard total laryngectomy involves dissection of the larynx from above the hyoid bone to below the cricoid cartilage. The suprahyoid muscles are dissected from the hyoid bone [40].
Anatomically, the pharynx is divided into three subsections, the most inferior of which (the hypopharynx) extends from the level of the hyoid bone to the inferior margin of the cricoid cartilage. The pharyngoesophageal junction is in the inferior hypopharynx and is also known as the cricopharyngeal (or upper esophageal) sphincter, the point at which the digestive tract is most narrow in the neck.
The thyroid lobes are located adjacent to the thyroid cartilage and connected in the midline by an isthmus that is located just inferior to the cricoid cartilage. A pyramidal lobe is present in about 50% of patients.
Lower end of trachea was pulled up and sutured with lower edge of cricoid cartilage with 2/0 prolene nonabsorbable suture.
Neck circumference was measured at the level of the cricoid cartilage, and head circumference was measured through the superciliary arch and external occipital protuberances.
The cricoid cartilage is a hypoechoic, inverted U structure inferior to the thyroid cartilage; the posterior acoustic shadow corresponds to the airway Fig.
The device is designed to provide relief from LPR symptoms by applying slight external pressure to the cricoid cartilage area located below the Adam's apple which increases the internal pressure of the UES.
Trachea is a heavy-walled tube extending from the cricoid cartilage of the larynx to the root of the lung where it bifurcates to form the right and left principal bronchia (bronchus principalis) [2].
Observation at the level of the cricoid cartilage and larynx revealed slight edema.