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Phlegm is the mucus which we can cough up from the lungs. In the mouth it mixes with http://www.answers.com/topic/saliva (spit) to become sputum, which is then expectorated: phlegm plus saliva equals sputum, which is commonly studied by doctors to give signs of what is happening in the lungs.

In health the output of phlegm is too small to be measured accurately, but estimates give values of 15-50 ml/day, a minute amount. This is carried up to the larynx by the ‘ciliary escalator’, the wave-like movement of the hairs on the cells lining the trachea and bronchi. Once in the larynx, the phlegm is either coughed out, or more usually swallowed with, at the most, a throat-clearing ‘huff’. In disease, excessive production of mucus in the airways is characteristic of illnesses such as chronic bronchitis, usually diagnosed by the large production of phlegm; the mucus stimulates nerve receptors in the lining of the airways, which excite http://www.answers.com/topic/cough, and this leads to the removal of the phlegm. The commonest causes of phlegm production are airways infections, such as influenza, and cigarette http://www.answers.com/topic/smoking. Smokers' cough is due to the irritation of smoke stimulating mucus output from the glands in the trachea and bronchi. At night this mucus stays in the lungs, and when the smoker gets up in the morning the accumulated mucus is coughed up. The greatest output of phlegm is seen in a rare condition, bronchorrhoea, in which as much as two litres/day of sputum may be produced.

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Related Questions

How much flem do you cough up to when a person has emphysema?

A person with emphysema would cough up to about 2 cups of phlegm per day. That would mean in 8 days, they would cough up a gallon of phlegm. Drink up!


What is A productive cough?

A nonproductive cough is a cough that does not bring up phlegm or mucus. It is also called a dry cough, and tends to irritate the throat much more than a productive cough (a cough that brings up phlegm and/or mucus) does.


What is the difference between flu and phlegm?

Phlegm is mucous. It is generally referred to as "phlegm" and sometimes as "sputum" when referring to mucous found in the throat or expelled from the lungs/bronchial passages by way of a cough.


What does it mean when you cough up green and yellow phlegm when you have copd?

It means you have a sinus infection. Just make sure you cough it all up, and dont swallow it or it will not go away as fast as it will if you cough it up and spit it out.


What you call a yellowish substance when you cough?

Phlegm.


What is a loogie?

A "loogie" is a thick ball of phlegm that forms in the trachea or bronchial tubes, and is coughed up. To cough up a ball of phlegm and spit it out is colloquially called " to hock a loogie" or "hawking a loogie" (from the characteristic sound of expectoration, and related to the verb "hack" meaning to cough).


Does smoking cause phlegm?

Well I'm not a doctor, but I do know that after you quit smoking you occasionally cough up phlegm for anywhere up to a year after you quit. This is an effect from the lungs healing themselves.


Why do you cough up phlem and have flatulence at the same time?

If you cough up phlegm, it means you could have a cold. If you have flatulence at the same time, it just means you have gas. They may not be related.


What is the side effects of senega and ammonia mixture?

you feel better. makes you cough up the phlegm mate


How do you use phlegm in a sentence?

Cough medicines may help either to control coughing or loosen the phlegm.


What is a productive cough and how can it be managed effectively?

A productive cough is when you cough up mucus or phlegm from your lungs. To manage it effectively, you can stay hydrated, use a humidifier, try over-the-counter cough medicines, and consult a doctor if it persists.


How do you hawk a loogie?

A "loogie" is a thick ball of phlegm that forms in the trachea or bronchial tubes, and is coughed up. To cough up a ball of phlegm and spit it out is colloquially called " to hock a loogie" or "hawking a loogie" (from the characteristic sound of expectoration or clearing the throat, and related to the verb "hack" meaning to cough).