How do we eat? Detailed answer

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How do we eat? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

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How do we eat?

No known musical instrument can match the human voice in range and richness of tonal hues! The human voice apparatus is a complex mechanism. Let's start with the throat. This is where the voice box is located, which is a cartilaginous framework that you can feel at the front of your neck.

Inside the larynx are two arytenoid cartilages to which our vocal cords attach. Sixteen different muscles move these vocal cords, tightening or loosening them, just like violinists control the tension of the strings on their instruments. The vocal cords can occupy approximately 170 positions! When a certain amount of air rises with the help of the diaphragm and other muscles, the vocal cords begin to vibrate, and this causes the air column in the airways to vibrate.

We perceive the oscillation of a column of air as sound. If the vocal cords are not too tense, then they make about 80 vibrations per second, and the sound seems low. If the vocal cords are tense, then they can vibrate at a frequency of about 1000 vibrations per second and we hear high-pitched sounds. The height of the human voice also depends on the length of the vocal cords.

The range and quality of the voice depends on the shape and size of the resonating cavities, which include part of the vocal cords, trachea, chest and pharynx, oral and nasal cavities, and nasal sinus. In people with beautiful voices, the resonating cavities are shaped so that they vibrate "musically".

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which object from Shakespeare's play has become half the size in Russian translation?

The catchphrase from Shakespeare's tragedy "Richard III" is widely known: "A horse! A horse! My kingdom for a horse!" In the original, the king offers exactly twice as much, that is, the whole kingdom: "A horse, a horse! My kingdom for a horse!". Regarding the origin of this inaccuracy in the translation of the actor Yakov Bryansky, there are two opinions. Perhaps it is due to the fact that Bryansky did not use the English text, but the French prose translation. Or he deliberately changed the size under the influence of Russian fairy tales, where for feats they often promise the hand of the king's daughter and half the kingdom in addition.

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An advanced bi-directional charging system for electric vehicles will be tested at the Honda European Research Center in Offenbach, Germany.

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