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Equine Upper Respiratory Tract - Horse Anatomy (view source)
Revision as of 22:09, 15 November 2012
, 22:09, 15 November 2012→Extrinsic Musculature
===Extrinsic Musculature===
===Extrinsic Musculature===
Extrinsic musculature connects the larynx to the sternum, [[Tongue - Anatomy & Physiology|tongue]], [[Pharynx - Anatomy & Physiology|pharynx]] and [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]].
====Hyoepiglottic muscle (''hyoepiglotticus'')====
====Hyoepiglottic muscle (''hyoepiglotticus'')====
The hyoepiglotticus is a bilobed muscle that originates on the basihyoid bone and inserts ventrally on the epiglottis. In horses, contraction of the hyoepiglotticus muscle pulls the epiglottis toward
The hyoepiglotticus is a bilobed muscle that originates on the basihyoid bone and inserts ventrally on the epiglottis. In horses, contraction of the hyoepiglotticus muscle pulls the epiglottis toward
the basihyoid bone, depressing it against the soft palate. This enlarges the airway during inspiration. Additionally, contraction of the muscle stabilizes the epiglottis during inspiration, preventing its prolapse through the glottis.
the basihyoid bone, depressing it against the soft palate. This enlarges the airway during inspiration. Additionally, contraction of the muscle stabilizes the epiglottis during inspiration, preventing its prolapse through the glottis.
===Function===
===Function===