Phlegm is the thick mucus and sputum the material coughed up from the lining of the respiratory tract.
Phlegm is a mucus-like substance produced in the respiratory tract, while sputum is a mixture of saliva and mucus that is coughed up from the lungs. Phlegm is typically clear or white, whereas sputum can be yellow, green, or bloody, indicating infection or other health issues.
Phlegm would be described as sputum only after it is expelled from the body. The word sputum literally means, that which has been spit.
It is called sputum.
SPUTUM
Sputum
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.
Saliva is the watery substance produced in the mouth that helps with digestion and lubrication, while sputum is the mucus or phlegm that is coughed up from the respiratory tract. Saliva is mainly produced by salivary glands, while sputum is produced by the respiratory system in response to infection or irritation.
sputum is phlegm ejected through the mouth that can be examined for diagnostic purposes. is a procedure in which a sample of mucus is coughed up from the lungs and them examined under a microscope to detect cancer cells.
Black-looking phlegm can be caused by old blood that either ran down your throat from your mouth or nose due to a cold or dry membranes or from similar old blood in your bronchial tubes from a lung infection or bronchitis. Having bloody sputum (phlegm) is called hemoptysis. Phlegm can be colors ranging from white to black and the color is often, but not always, in streaks in the sputum. Yellow, brown, green, red, pink, and black phlegm are all reasons to see your doctor to determine the cause. See the related question below for more information about causes of black phlegm.
hematemesis : blood in vomitting or feces hemoptysis : blood in sputum
Black-looking phlegm can be caused by old blood that either ran down your throat from your mouth or nose due to a cold or dry membranes or from similar old blood in your bronchial tubes from a lung infection or bronchitis. Having bloody sputum (phlegm) is called hemoptysis. Phlegm can be colors ranging from white to black and the color is often, but not always, in streaks in the sputum. Yellow, brown, green, red, pink, and black phlegm are all reasons to see your doctor to determine the cause. See the related question below for more information about causes of black phlegm.
The scientific name for mucus is "sputum" when referring to mucus from the respiratory tract, and "phlegm" when referring to mucus from the throat or lungs.