Interarytenoid fold
(Redirected from Plica interarytenoidea)
Interarytenoid Fold[edit | edit source]
The interarytenoid fold is a structure located in the larynx, which is part of the human respiratory system. It plays a crucial role in the function of the vocal cords and the production of sound.
Anatomy[edit | edit source]
The interarytenoid fold is a band of tissue that connects the two arytenoid cartilages at the posterior aspect of the larynx. It is composed of muscle and connective tissue, and it is covered by a layer of mucous membrane.
Location[edit | edit source]
The interarytenoid fold is situated at the back of the larynx, between the two arytenoid cartilages. It is part of the glottis, which is the space between the vocal cords.
Structure[edit | edit source]
The fold contains the interarytenoid muscle, which is responsible for adducting the vocal cords, bringing them together during phonation. This muscle is innervated by the recurrent laryngeal nerve, a branch of the vagus nerve.
Function[edit | edit source]
The primary function of the interarytenoid fold is to assist in the closure of the vocal cords during speech and swallowing. By bringing the arytenoid cartilages closer together, it helps to close the glottis, preventing food and liquid from entering the trachea and facilitating the production of sound.
Clinical Significance[edit | edit source]
Dysfunction of the interarytenoid fold can lead to voice disorders, such as dysphonia, or swallowing difficulties, known as dysphagia. Conditions such as vocal cord paralysis or laryngitis can affect the function of the interarytenoid fold.
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