In most animals, including infant humans, the larynx is situated very high in the throat — a position that allows it to couple more easily with the nasal passages, so that breathing and eating are not done with the same apparatus. However, some aquatic mammals, large deer, and adult humans have descended larynges. An adult human cannot raise the larynx enough to directly couple it to the nasal passage. Some linguists have suggested that the descended larynx, by extending the length of the vocal tract and thereby increasing the varie ...

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Larynx, Larynx - Structure, Larynx - Function, Larynx - Descended larynx, Larynx - Disorders

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Larynx, Larynx - Structure, Larynx - Function, Larynx - Descended larynx, Larynx - Disorders

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During swallowing the larynx (at the epiglottis and at the glottis) closes to prevent swallowed material entering the lungs, there is also a strong cough reflex to protect the lungs. Sensation is transferred by the superior laryngeal nerve (glottis and supraglottis) and the recurrent laryngeal nerve (subglottis and muscles), both branches of the vagus nerve. While articulation of the sound (the fine manipulation that creates the many different vowel and consonant sounds of the world's languages) is achieved by the use of the teeth, tongue, palate, and lips, sound is generated in the larynx, and that is wher ...

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Larynx, Larynx - Structure, Larynx - Function, Larynx - Descended larynx, Larynx - Disorders

Read more here: » Larynx: Encyclopedia II - Larynx - Function

During swallowing, the larynx (at the epiglottis and at the glottis) closes to prevent swallowed material from entering the lungs; there is also a strong cough reflex to protect the lungs. Sensation is transferred by the superior laryngeal nerve (glottis and supraglottis) and the recurrent laryngeal nerve (subglottis and muscles), both branches of the vagus nerve. While articulation of the sound (the fine manipulation that creates the many different vowel and consonant sounds of the world's languages) is achieved by the use of the teeth, tongue, palate, and lips, sound is generated in the larynx, and that is wher ...

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Larynx, Larynx - Structure, Larynx - Function, Larynx - Descended larynx, Larynx - Disorders

Read more here: » Larynx: Encyclopedia II - Larynx - Function

The arytenoid cartilages are a pair of small pyramid-shaped cartilages, at the upper rear of the larynx, to which the vocal cords are attached. Nose - Nasal cavity - Pharynx - Larynx - Trachea - Lungs - Conducting zone - Respiratory zone ...

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There are several things that can cause a larnyx to not function properly. Some symptoms are hoarseness, loss of voice, pain in the throat, and breathing difficulties. Acute laryngitis is the sudden inflamation and swelling of the larynx. It is caused by the common cold or by excessive yelling. It is not serious. Chronic laryngitis is caused by smoking, dust, frequent yelling, or prolonged exposure to polluted air. It is much ...

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Larynx, Larynx - Structure, Larynx - Function, Larynx - Descended larynx, Larynx - Disorders

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The symptoms of cancer of the larynx depend mainly on the size of the tumor and where it is in the larynx. Symptoms may include the following: Hoarseness or other voice changes A lump in the neck A sore throat or feeling that something is stuck in the throat Persistent cough Stridor Bad breath Earache Needless to say, these symptoms are not specific for cancer. ...

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Cancer of the larynx, Cancer of the larynx - Risk Factors, Cancer of the larynx - Symptoms, Cancer of the larynx - Diagnosis, Cancer of the larynx - Treatment

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The vocal tract is that cavity in animals and humans, where sound that is produced at the sound source (larynx in mammals; syrinx in birds) is filtered. In birds it consists of the trachea, the syrinx, the oral cavity, the upper part of the esophagus, and the beak. In mammals it consists of the laryngeal cavity, the pharynx, the oral cavity, and the nasal cavity, and in some nonhuman mammals maybe also the airsacs. Other related archivesbeak, birds, esophagus, larynx, mammals, p

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Vocal apparatus is a term used in phonetics to designate all parts of human anatomy that can be used to produce speech. This includes the lips, tongue, teeth, hard and soft palates, uvula, larynx, lungs, etc. Other related archiveshuman anatomy, larynx, lips, lungs, palates, phonetics, speech, teeth, tongue, uvula

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In anatomy, the throat is the part of the neck anterior to the vertebral column. It consists of the pharynx and larynx. The throat contains various blood vessels, various pharyngeal muscles, the trachea (windpipe) and the esophagus. The hyoid bone is the only bone located in the throat of mammals. Categories: Head and neck | Respiratory system ...

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Diagnosis is made by the doctor on the basis of a careful medical history, physical examination, and special investigations which may include Chest X-Ray, CT or MRI scans, and tissue biopsy. The examination of the throat requires some expertise, which may require specialist referral. The physical exam includes a systematic examination of the whole patient to assess general health, to look for signs of associated conditions and metastatic disease. The neck and supraclavicular fossa are palpated to feel for cervical adenopathy, other ma ...

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Cancer of the larynx, Cancer of the larynx - Risk Factors, Cancer of the larynx - Symptoms, Cancer of the larynx - Diagnosis, Cancer of the larynx - Treatment

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In phonetics, advanced tongue root, abbreviated ATR or +ATR, or expanded, is the expansion of the pharyngeal cavity by moving the base of the tongue forward, and often lowering the larynx, during the pronunciation of a vowel. The lowering of the larynx sometimes adds a breathy quality to the vowel. The diacritic for ATR in the International Phonetic Alphabet is the left tack, [  ̘]. In languages where they occur, advanced tongue root vowels very often contrast with retracted tongue root vowels in a system of vowel ...

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The human larynx rests in a frame of cartilage bound by ligaments and muscles. At the front is the thyroid cartilage, creating the lump at the front of the neck, known as the laryngeal prominence or more commonly as the Adam's apple. The etymology of the term "Adam's apple" is unclear: Webster's 1913 dictionary states that the term "... is so called from a notion that it was caused by the forbidden fruit, (an ...

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Hemoptysis (or "coughing up blood") is the expectoration of blood or of blood-stained sputum from the bronchi, larynx, trachea, or lungs (e.g. in tuberculosis or other respiratory infections). It is not the same as Hematemesis, which refers to vomiting up blood. Hemoptysis - Causes. This can be due to lung neoplasm, tuberculosis, bronchiectasis, coccidioidomycosis, or pulmonary embolism. Rarer causes include hereditary hemorrhagic telangiectasia (HHT or Rendu-Osler-Weber syndrome). ...

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Hemoptysis - Causes

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The vocal cords, also known as vocal folds, are composed of twin infoldings of mucous membrane stretched horizontally across the human larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation. Open during breathing, the folds are controlled via the arytenoid cartilages for speech or singing. They are white because of poor blood circulation. The folds vibrate when they are closed to obstruct the airflow through the glottis, the space between the folds: they are forced open by ...

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Creaky voice (also called laryngealisation or vocal fry, especially in the US), 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, and forming a large, irregularly vibrating mass. The frequency of the vibration is very low (20–50 pulses per second, about two octaves below normal voice) and the airflow through the glottis is very slow. A slight degree of laryngealisation, occurring e.g. ...

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Upper respiratory tract infection, also popularly known as either the acronym URTI or URI, is the disease characterised by an acute infection which involves the upper respiratory tract: nose, sinuses, pharynx, or larynx. Upper respiratory tract infection - Signs and symptoms. Symptoms of URTIs include cough, rhinorrhea (running nose), sore throat, fever, pain and myalgia. Infective agents for URTIs include respiratory viruses, bacteria and fungi. The most common form of URTI by far is a ...

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Upper respiratory tract infection - Signs and symptoms Upper respiratory tract infection - Treatment Upper respiratory tract infection - Reference

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The conducting zone of the respiratory system is made up of the trachea, bronchi, bronchioles, and terminal bronchioles. Conducting zone - Functions. Low resistance pathway for airflow Defence Warms and moistens air Phonates Nose - Nasal cavity - Pharynx - Larynx - Trachea - Lungs - Conducting zone - Respiratory zone Category: Respiratory system ...

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Conducting zone - Functions

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In the Western world, smoking is the most important risk factor for laryngeal cancer. Heavy chronic consumption of alcohol, particularly alcoholic spirits is also significant. When combined, these two factors appear to have a synergistic effect. Some other quoted risk factors are likely, in part, to be related to prolonged alcohol and tobacco consumption. These include low socioeconomic status, male sex, and age greater than 55 years. People with a previous history of head and neck cancer are known to be at much higher risk (about 25% ...

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Cancer of the larynx, Cancer of the larynx - Risk Factors, Cancer of the larynx - Symptoms, Cancer of the larynx - Diagnosis, Cancer of the larynx - Treatment

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Cats produce the purring noise by vibrating their larynx, or voice box, in a particular manner. They have a timing mechanism in the brain which sends neural messages to a muscle in the larynx, rhythmically opening and closing the air passage several times per second. Combined with the steady inhalation and exhalation of air as the cat breathes, a purring noise is produced.^{See also:}

Purr, Purr - How felines purr, Purr - Historical theories, Purr - Why felines purr, Purr - Other examples of purring

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