Phlegm

A detailed overview of phlegm in the human body

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Phlegm is a type of mucus produced in the respiratory system.

Phlegm is a type of mucus that is produced by the respiratory system, particularly in the trachea and bronchi. It is a thick, viscous substance that plays a crucial role in trapping and expelling foreign particles and microorganisms from the respiratory tract.

Composition

Phlegm is composed of water, glycoproteins, immunoglobulins, lipids, and other substances. The primary glycoproteins in phlegm are mucins, which give it its viscous and sticky properties. These properties are essential for trapping dust, bacteria, and other particles inhaled into the respiratory system.

Function

The main function of phlegm is to protect the respiratory system by trapping foreign particles and microorganisms. It also contains antibodies and enzymes that help neutralize pathogens. The cilia lining the respiratory tract move the phlegm upwards towards the pharynx, where it can be swallowed or expectorated.

Production

Phlegm production can increase in response to infection, allergic reactions, or irritation of the respiratory tract. Conditions such as bronchitis, pneumonia, and chronic obstructive pulmonary disease (COPD) are associated with increased phlegm production.

Color and Consistency

The color and consistency of phlegm can vary depending on the underlying condition. Clear phlegm is typically normal, while yellow or green phlegm may indicate a bacterial infection. Thick, white phlegm can be a sign of viral infection or chronic respiratory conditions.

Management

Management of excessive phlegm production involves treating the underlying cause. This may include the use of antibiotics for bacterial infections, antihistamines for allergies, or bronchodilators for conditions like asthma and COPD. Staying hydrated and using humidifiers can also help thin the phlegm, making it easier to expel.

Related pages

• Mucus
• Respiratory system
• Bronchitis
• Pneumonia
• Chronic obstructive pulmonary disease