Arytenoid muscle

Arytenoid Muscle

The Arytenoid Muscle (pronounced: ar-i-te-noid) is a group of muscles in the larynx that play a crucial role in vocal cord movement and voice production.

Etymology

The term "Arytenoid" is derived from the Greek words "arytaina" meaning ladle and "eidos" meaning form or shape. This is due to the ladle-like shape of the Arytenoid Cartilage to which the Arytenoid Muscle is attached.

Anatomy

The Arytenoid Muscle is divided into two parts: the Oblique Arytenoid Muscle and the Transverse Arytenoid Muscle. Both parts are responsible for the movement of the Vocal Cords and the Arytenoid Cartilage.

Oblique Arytenoid Muscle

The Oblique Arytenoid Muscle originates from the muscular process of the Arytenoid Cartilage and inserts into the apex of the opposite Arytenoid Cartilage. It functions to pull the Arytenoid Cartilages together, which results in the adduction of the Vocal Cords.

Transverse Arytenoid Muscle

The Transverse Arytenoid Muscle is the only unpaired muscle in the larynx. It extends between the posterior surfaces of the Arytenoid Cartilages, and its contraction brings the Arytenoid Cartilages together, leading to the adduction of the Vocal Cords.

Function

The primary function of the Arytenoid Muscle is to control the tension and position of the Vocal Cords. By doing so, it plays a significant role in voice production and modulation. It also assists in closing the Glottis during swallowing to prevent food and liquid from entering the Trachea.

Related Terms

External links

Medical encyclopedia article on Arytenoid muscle
Wikipedia's article - Arytenoid muscle

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Arytenoid muscle