Epiglottis
The epiglottis is a thin flap that isn't a muscle in the oesophagus. It is the top part of the larynx. It closes to stop food from going down the trachea. It opens to allow breathing.
Epiglottis Media
Location of the epiglottis
Cross-section of the larynx, with structures including the epiglottis labelled.
Cross-section of the larynx of a horse. The epiglottis here is shown as '2'.
Other websites
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