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Respirology. Respiratory sounds, also known as lung sounds or breath sounds, are the specific sounds generated by the movement of air through the respiratory system. [1] These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral characteristics ...
Exhalation (or expiration) is the flow of the breath out of an organism. In animals, it is the movement of air from the lungs out of the airways , to the external environment during breathing . This happens due to elastic properties of the lungs, as well as the internal intercostal muscles which lower the rib cage and decrease thoracic volume.
Crackles are the clicking, rattling, or crackling noises that may be made by one or both lungs of a human with a respiratory disease during inhalation, and occasionally during exhalation. They are usually heard only with a stethoscope ("on auscultation "). Pulmonary crackles are abnormal breath sounds that were formerly referred to as rales.
In human speech, egressive sounds are sounds in which the air stream is created by pushing air out through the mouth or nose. The three types of egressive sounds are pulmonic egressive (from the lungs ), glottalic egressive (from the glottis ), and lingual ( velaric) egressive (from the tongue ). The opposite of an egressive sound is an ...
Inhalation (or inspiration) is the process of drawing air or other gases into the respiratory tract, primarily for the purpose of bringing oxygen into the body. It is a fundamental physiological function in humans and many other organisms, essential for sustaining life. Inhalation is the first phase of breathing, allowing the exchange of oxygen ...
Some pulmonic ingressive sounds do not have egressive counterparts. For example, the cell for a velar trill in the IPA chart is greyed out as not being possible, but an ingressive velar (or velic) trill is a snort; this has been jocularly transcribed ꙫ . Pulmonic ingressive sounds are extremely rare outside paralinguistics.
Real-time magnetic resonance imaging of the human thorax during breathing X-ray video of a female American alligator while breathing.. Breathing (spiration or ventilation) is the rhythmical process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly to flush out carbon dioxide and bring in oxygen.
Stridor. Stridor ( Latin for "creaking or grating noise") is a high-pitched extra-thoracic breath sound resulting from turbulent air flow in the larynx or lower in the bronchial tree. It is different from a stertor which is a noise originating in the pharynx . Stridor is a physical sign which is caused by a narrowed or obstructed airway.