Interarytenoid fold

Interarytenoid fold is a structure found in the larynx, specifically between the arytenoid cartilages. It is a part of the vocal apparatus and plays a crucial role in phonation and respiration.

Etymology

The term "interarytenoid" is derived from the Latin words "inter", meaning between, and "arytenoid", referring to the arytenoid cartilages. The "fold" refers to the shape and structure of this part of the larynx.

Anatomy

The interarytenoid fold is a mucous membrane that extends between the two arytenoid cartilages in the larynx. It is located posteriorly and superiorly to the vocal cords, and is also known as the aryepiglottic fold. The interarytenoid fold contains the interarytenoid muscle, which is responsible for adducting the vocal cords during phonation.

Function

The primary function of the interarytenoid fold is to assist in the closure of the glottis during swallowing, preventing food and liquid from entering the trachea. It also plays a role in phonation by helping to control the tension of the vocal cords.

Clinical significance

Abnormalities or damage to the interarytenoid fold can lead to various voice disorders, such as hoarseness, dysphonia, and aphonia. It can also result in aspiration, where food or liquid enters the trachea instead of the esophagus, leading to potential respiratory problems.

Related terms

• Arytenoid cartilage
• Vocal cords
• Glottis
• Phonation
• Respiration

See also

• Larynx
• Voice disorders
• Swallowing

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