Thyroepiglottic muscle

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The thyroepiglottic muscle is a muscle in the throat that connects the thyroid cartilage to the epiglottis. It serves to help move the epiglottis and close the laryngeal aditus (opening to the larynx).


Thyroepiglottic muscle Aryepiglottic muscle Thyroarytenoid muscle Lateral cricoarytenoid muscle Posterior cricoarytenoid muscle Arytenoid muscle Cricothyroid muscle Epiglottis Superior cornu Cricoid cartilage Arytenoid cartilage Corniculate cartilage Trachea Thyroid cartilage Thyroid cartilage'Diagram of the larynx and the muscles around it.'

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The muscles of the larynx. The right side of this picture is the front side of the body.

Contents

Origin

The thyroepiglottic muscle originates from the thyroid cartilage, at the inner surface of the anterior section near the Adam's apple. Because they share a common origin, the thyroepiglottic muscle is often considered a part of the thyroarytenoid muscle, although their insertions are distinct.

Insertion

The thyroepiglottic muscle inserts into the epiglottis, at the lateral border.

Action

The thyroepiglottic muscle moves the epiglottis to aid in closing the laryngeal aditus (the airway from the pharynx into the larynx).

Innervation

The thyroepiglottic muscle is innervated by the recurrent laryngeal branch of the vagus nerve (CN X).

See also

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