The aryepiglottic fold is counted as part of the pharynx in humans. It is a mucosal fold. It is vibrated in during laryngeal singing.
What is the aryepiglottic fold?
The aryepiglottic fold is called the plica aryepiglottica. It is associated with the medulla oblongata in medicine. The medulla oblongate is approximately 3 cm long. Downward, it is clearly demarcated from the spinal cord. It is considered an extended spinal cord and is located in the IV ventricle. Upward, it forms the transition to the pons. This is an area assigned to the cerebellum in humans. The aryepiglottic fold is a mucosal fold. It is located in the lower part of the pharynx. This is referred to as the pharynx. The aryepiglottic fold forms the border with the larynx, which is called the larynx. The mucosal fold forms the lateral border to the entrance of the larynx. This is referred to as the aditus laryngis. In laryngeal singing, the formation of the tone occurs in this region and is dependent on the mucous membrane present there. Particularly in the case of the undertone range, the aryepiglottic fold is replaced in vibration together with the vocal cords so that the tone can be produced. Laryngeal singing is a singing technique that has characteristic features and produces low tones.
Anatomy and structure
The aryepiglottic fold is associated with the medulla oblongata. The medulla oblongata is the medulla oblongata, which is the extended spinal cord. It is located between the midbrain and the spinal cord. The lateral walls of the medulla oblongata are formed by strong fibrous tracts. These are called pedunculi cerebelli and connect the cerebellum to the brainstem. This area is classified as the IV ventricle. Directly beneath the fiber tracts, there is lateral expansion. The floor located underneath has a diamond shape. This area is called the rhomboid fossa or rhomboid fossa because of its visual shape. There are various protrusions in the rhomboid fossa. Among them is the colliculus facialis, which is formed by a loop containing the nuclei of the facial nerve. The aryepiglottic fold is located in this area. It is located in the pharynx of the human. Directly below the rhomboid fossa and in the lower portion of the aryepiglottic fold are two elevations. These are called the tuberculum corniculatum and the tuberculum cuneatum. The aryepiglottic fold is located in the center of the pharynx. This is referred to as the pharynx.
Function and tasks
The tasks and function of the aryepiglottic fold are very specific. They are needed to produce undertones of the larynx. Together with the vocal cords, they are set in vibration to produce the undertone song. This is a special form of singing technique that does not produce words, but only tones. All tones are below the usual singing tone. They must also be distinguished from the overtones. The tones produced with the Aryepiglottic fold are so-called integer fractions of the fundamental frequency. There are various undertones, although few people can sing an undertone series that extends to the fifth undertone or beyond. With a fundamental of 100 hertz, the undertone series begins at 50 hertz. The next is at 33.33 hertz, followed by 25 hertz. The fourth tone is at 20 hertz. Anything below 20 hertz can hardly be heard by humans, if at all, since the range of hearing for most people is specified between 20 hertz and 20,000 hertz. The singing technique is called straw bass and is often used in relaxation techniques. The sounds formed with the support of the aryepiglottic fold involve the larynx at the same time. For this reason, the singing technique is laryngeal singing. The special feature of the singing technique is the vibration. This is only half as fast as in normal singing.
Diseases
Inflammation, viral infections, tumors and the formation of cysts can occur in the pharynx. Each of these ailments affects the functional activity of the aryepiglottic fold and, consequently, the formation of the tones in the area of the undertone. When there is swelling in the throat, the functional activity of the aryepiglottic fold is limited. Inflammations cause the skin in the pharynx to be irritated and the mucous membrane to be insufficiently formed or to swell.Diseases that arise due to inflammation include pharyngitis, tonsillitis, laryngitis and epiglottitis. Inflammation of the throat is caused by cold viruses. Angina is tonsillitis associated with narrowing of the throat. Laryngitis is usually caused by bacteria. During a cold, there is inflammation of the mucous membrane, which extends downward in the throat. The mucosa, as well as the vocal cords, may swell due to the inflammation. Epiglottitis is the inflammation of the epiglottis. It is caused by an infection with bacteria. It is usually diagnosed in children between the ages of two and eight. When tumors form in the throat, cancer of the larynx often occurs. This is called laryngeal carcinoma. Risk factors that trigger laryngeal cancer include tobacco smoking and regular alcohol consumption. Those at risk of laryngeal carcinoma usually include men because of the risk factors. If the larynx must be removed due to disease, the aryepiglottic fold loses its function. It is no longer needed.
