Description
Thick sticky fluid mucus from the respiratory passages.
Function
Phlegm is produced by the respiratory system and particularly expelled by coughing (sputum). Its composition varies, depending on climatic, genetic and state of the immune system, but basically is a water-based gel consisting in glycoproteins, immunoglobulins, lipids, etc.
Colour
Healthy phlegm is normally clear or white. Yellow phlegm is normally a sign of an infection in the case of the common cold. Greenish or brownish phlegm is nearly always a sign of infection. Greenish or rusty phlegm or phlegm with rusty spots can also be a sign of pneumonia and/or internal micro-bleedings.
Shape
Thick fluid.
Location
In the lung, throat and mouth.
Thick sticky fluid mucus from the respiratory passages.
Function
Phlegm is produced by the respiratory system and particularly expelled by coughing (sputum). Its composition varies, depending on climatic, genetic and state of the immune system, but basically is a water-based gel consisting in glycoproteins, immunoglobulins, lipids, etc.
Colour
Healthy phlegm is normally clear or white. Yellow phlegm is normally a sign of an infection in the case of the common cold. Greenish or brownish phlegm is nearly always a sign of infection. Greenish or rusty phlegm or phlegm with rusty spots can also be a sign of pneumonia and/or internal micro-bleedings.
Shape
Thick fluid.
Location
In the lung, throat and mouth.
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