( Crucially, the larynx or voicebox, originally high in the throat to let the baby breathe while swallowing, descends during the first year of life, allowing a pharynx to develop and all the sounds of human speech to be formed.

The contaminated soil and sediment continue to affect the citizens of Vietnam, poisoning their food chain and causing illnesses, serious skin diseases and a variety of cancers in the lungs, larynx, and prostate.

Castration before puberty ( or in its early stages ) prevents a boy's larynx from being transformed by the normal physiological events of puberty.

In linguistics, creaky voice ( sometimes called laryngealisation, pulse phonation, vocal fry, or glottal fry ), is a special kind of phonation in which the arytenoid cartilages in the larynx are drawn together ; as a result, the vocal folds are compressed rather tightly, becoming relatively slack and compact.

For instance, Tecumseh Fitch has argued that the descended larynx is not unique to humans.

A number of other changes have also characterized the evolution of humans, among them an increased importance on vision rather than smell ; a smaller gut ; loss of body hair ; evolution of sweat glands ; a change in the shape of the dental arcade from being u-shaped to being parabolic ; development of a chin ( only found in Homo sapiens ), development of styloid processes ; development of a descended larynx.

Most felids seem to be able to purr, vibrating the muscles in their larynx to produce a distinctive buzzing sound.

Galen describes the symptoms of fever, vomiting, fetid breath, catarrh, cough and ulceration of the larynx and trachea.

Galen clarified the anatomy of the trachea and was the first to demonstrate that the larynx generates the voice.

Each nerve cell in this path begins in the brainstem and passes down the neck along the vagus nerve, then branches off into the recurrent laryngeal nerve which passes back up the neck to the larynx.

Image: Gray955. png | The entrance to the larynx, viewed from behind.

Image: Gray1204. png | The entrance to the larynx.

Davis had an operation to remove polyps from his larynx in October 1955.

# The vocal folds in the larynx vibrate, creating fluctuations in air pressure that are known as sound waves.

The larynx or voice box is a cylindrical framework of cartilage that serves to anchor the vocal folds.

Similar actions, with similar results, occur when the vocal cords are contracted or relaxed across the larynx.

In general terms the speech organs means the mouth, throat ( larynx ), the vocal cords and lungs.

Problems treated in phoniatrics include dysfunction of the vocal cords, cancer in the vocal cords or larynx, incapability to control the speech organs properly ( speech disorders ), and vocal loading related problems.

Other phoneticians, though, call this process quasi-periodic vibration voicing, and they use the term phonation to refer to any oscillatory state of any part of the larynx that modifies the airstream, of which voicing is just one example.

The phonatory process, or voicing, occurs when air is expelled from the lungs through the glottis, creating a pressure drop across the larynx.

The oscillation of the vocal folds serves to modulate the pressure and flow of the air through the larynx, and this modulated airflow is the main component of the sound of most voiced phones.

The sound that the larynx produces is a harmonic series.

The vocal folds will not oscillate if they are not sufficiently close to one another, are not under sufficient tension or under too much tension, or if the pressure drop across the larynx is not sufficiently large.

Smaller changes in tension can be effected by contraction of the thyroarytenoid muscle or changes in the relative position of the thyroid and cricoid cartilages, as may occur when the larynx is lowered or raised, either volitionally or through movement of the tongue to which the larynx is attached via the hyoid bone.

Through her father she descends from Charles II of England through his illegitimate child Henry FitzRoy, 1st Duke of Grafton by Barbara Palmer, 1st Duchess of Cleveland.

As the path descends to a low ( or high ) child child from a node, then that node's variable is assigned to 0 ( resp.

: A pure blooded Sennyo ( a child of two Sennin parents ), she can only live in the pure air of the Sennin world, and as the air of the human world is poisonous to her, she rarely descends there.

The moon descends minute by minute as Skull Kid enjoys the anguish of Kafei of being a child and unable to show his face to Anju.

How Xenocrates tried to establish and connect scientifically these assumptions, which appear to be taken chiefly from his books on the nature of the gods, we do not learn, and can only discover the one fundamental idea at the basis of them, that all grades of existence are penetrated by divine power, and that this grows less and less energetic in proportion as it descends to the perishable and individual.

With another sudden change of mood, he is again calm and protective, exhorting her to trust and obey him as God's spokesman -- and the chromatic scale descends in ominous contradiction.

Adiabatic heating also occurs in the Earth's atmosphere when an air mass descends, for example, in a katabatic wind or Foehn or chinook wind flowing downhill over a mountain range.

When a parcel of air descends, the pressure on the parcel increases.

Its total length from its source to its junction with the Rhine comprises about 295 km ( 183 miles ), during which distance it descends, draining an area of, including the whole of central Switzerland.

Aeneas descends into the underworld where he meets Dido ( who turns away from him to return to her husband ) and his father, who shows him the future of his descendents and thus the history of Rome.

Homer is somewhat vague about the precise manner of Ajax's death but does ascribe it to his loss in the dispute over Achilles's shield: when Odysseus visits Hades, he begs the soul of Ajax to speak to him, but Ajax, still resentful over the old quarrel, refuses and descends silently back into Erebus.

On Pentecost, the Holy Spirit descends on them.

The steel-string acoustic guitar is a modern form of guitar that descends from the classical guitar, but is strung with steel strings for a brighter, louder sound.

In The Frogs ( 405 BC ) by Aristophanes, Dionysus descends to Hades and announces himself as Heracles.

Beowulf descends to do battle with the dragon but finds himself outmatched.

The name of the Bavarian town of Passau descends from the Roman Batavis, which was named after the Batavi.

* A flat coast is one where the land gradually descends into the sea.

The Ennedi Plateau and the Ouaddaï highlands in the east complete the image of a gradually sloping basin, which descends towards Lake Chad.

The 1997 Rolf de Heer film, Epsilon, also known as Alien Visitor, an alien in female form descends to Earth from Epsilon in the Southern Cross, and inspires an Outback traveler to better his planet.

As Hope descends to the ground and cradles Cable's lifeless arm, Xavier reflects on everything that has transpired and states that, while he feels that Hope has indeed come to save mutantkind and revive his dream, she is still only a young woman and will have a long and difficult journey before she can truly achieve her potential.

* The hierarchy of domains descends from right to left ; each label to the left specifies a subdivision, or subdomain of the domain to the right.

* 1952 – Great Smog of 1952: A cold fog descends upon London, combining with air pollution and killing at least 12, 000 in the weeks and months that follow.

As Duke descends on Los Angeles in hopes for a vacation, his ship is shot down by unknown hostiles.

After barricading all of the doors, Ash descends into the cellar to find some extra shotgun shells, and while down there he experiences a series of strange events such as mysterious voices and blood seeping from numerous crevices and openings in the walls.

A demon emerges from the woods and descends upon Ash, who turns to see it and lets out a bloodcurdling scream.

In its course from Lake Victoria to Juba in southern Sudan, the White Nile's channel drops more than 600 m. In its 1, 600-km course from Juba to Khartoum, Sudan's capital, the river descends just 75 m. In southern and central Sudan, the White Nile passes through a wide, flat plain covered with swamp vegetation and slows almost to the point of stagnation.

When an electron in an excited molecule or atom descends to a lower energy level, it emits a photon of light equal to the energy difference.

Moses descends from the mountain, and his face is transformed, so that from that time onwards he has to hide his face with a veil.