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epiglottis

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epiglottis

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The epiglottis (: epiglottises or epiglottides) is a leaf-shaped flap in the throat that prevents food and water from entering the trachea and the lungs. It stays open during breathing, allowing air into the larynx. During swallowing, it closes to prevent aspiration of food into the lungs, forcing the swallowed liquids or food to go along the esophagus toward the stomach instead. It is thus the valve that diverts passage to either the trachea or the esophagus.

Key facts

Anatomy.Name
Epiglottis
Anatomy.Latin
epiglottis
Anatomy.Greek
ἐπιγλωττίς
Anatomy.Image
Gray958.png
Anatomy.Caption
View of the larynx from behind. The epiglottis is the structure at the top of the image.
Anatomy.Precursor
Fourth pharyngeal arch
Anatomy.Function
Prevent food from entering the respiratory tract

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Research

4,822 papers

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Wikidata facts

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Commons category
Epiglottis
Commons gallery
Epiglottis
NCI Thesaurus ID
C12709
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~8 min read

Article

17 sections
Contents
  • Structure
  • Microanatomy
  • Development
  • Variation
  • Function
  • Swallowing
  • Speech sounds
  • Clinical significance
  • Inflammation
  • Aspiration
  • Other
  • Other animals
  • History
  • Additional images
  • See also
  • References
  • External links

The epiglottis (: epiglottises or epiglottides) is a leaf-shaped flap in the throat that prevents food and water from entering the trachea and the lungs. It stays open during breathing, allowing air into the larynx. During swallowing, it closes to prevent aspiration of food into the lungs, forcing the swallowed liquids or food to go along the esophagus toward the stomach instead. It is thus the valve that diverts passage to either the trachea or the esophagus.

The epiglottis is made of elastic cartilage covered with a mucous membrane, attached to the entrance of the larynx. It projects upwards and backwards behind the tongue and the hyoid bone.

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