B

B

Bacteria

Microorganisms some of which can attack the human body and cause infections. Cough with phlegm is often a symptom of a bacterial infection. Coughing can also spread bacteria to other people, so it is important to cover the mouth while coughing if other people are present.

Bronchi

The main airway tubes that branch off from the trachea channelling air to and from the lungs.

Bronchioles

The smaller air passages branching off from the bronchi taking air deeper into the lungs.

Bronchitis

An inflammation of the bronchi usually caused by viral infection. Symptoms include cough with phlegm.