Phlegm
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Phlegm is mucus produced by the respiratory system, excluding that produced by the throat and nose passages. It often refers to respiratory mucus expelled by coughing, otherwise known as sputum. Phleg
A substance of phlegm
Mucus
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Mucus is a slippery gel produced by, and covering, mucous membranes. Mucus forms a protective barrier between epithelial cells on the internal and external surfaces of the body and the outside environ
Phlegm
…Phlegm (; Ancient Greek: φλέγμα, phlégma, "inflammation", "humour caused by heat") is mucus produced by the respiratory system, excluding that produced by the throat and nose passages. It often refers to respiratory mucus expelled by coughing…
3D render showing accumulated mucus in the airways