subglottis

DEFINITION of subglottis

This narrowest portion of the upper airway (about 4.5-5.5 mm in infants) is bounded superiorly by the vocal cords (glottis) and inferiorly by the first tracheal ring. It consists of mucosa, submucosa, and cartilage (primarily cricoid), aiding in humidifying and warming inhaled air. Pathologies like subglottic stenosis (narrowing <4 mm in infants, often from intubation) or subglottic cancer (rare laryngeal malignancy) can obstruct breathing, necessitating interventions like tracheotomy or dilation.

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ETYMOLOGY of subglottis

greek From latin sub- (“under, below”) + glottis (from Greek γλῶττις glōttis, “tongue,” later “vocal cords” or larynx opening, diminutive of γλῶττα glōtta, “tongue”). Thus, “below the glottis.”

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RELATED TERMS

Supraglottis: Upper larynx (above vocal cords). Glottis: Vocal folds and aperture. Subglottic stenosis: Narrowing, congenital or acquired. Cricoid: Inferior bounding cartilage. Laryngocele: Air sac, sometimes subglottic.

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DERIVATIONS of subglottis

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Query functionality

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(definition, (word) => econtains([[]].definition, word))) > 0 AND file.name != [[]].file.name

Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms