Hljóðröðar

Hljóðröðar, also known as vocal cords or vocal folds, are the muscle tissue in the larynx that vibrates to produce sound. They are located in the voice box, a structure in the neck. The vocal cords are composed of two folds of mucous membrane covered by a thin layer of skin. The space between the vocal cords is called the rima glottidis. When air passes through the vocal cords, they can vibrate to produce vocal sounds.

The pitch of the voice is determined by the tension of the vocal cords and the speed of their vibration. The vocal cords can be adjusted to produce a wide range of sounds, from whispering to shouting. They are controlled by the vocal cords muscles, which are innervated by the recurrent laryngeal nerve.

Hljóðröðar play a crucial role in speech and singing. They are also important in respiratory function, as they help to keep the airway open during breathing. Any disruption in the function of the vocal cords can lead to conditions such as hoarseness, vocal cord nodules, or vocal cord paralysis.

The study of the vocal cords and their function is known as laryngology. This field includes the diagnosis and treatment of disorders of the larynx and voice.