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Terminal & respiratory bronchioles

Bronchioli terminales et respiratorii · Terminální a respirační průdušinky

Respiratory system

Looks like

The last and finest air tubes, the terminal ones leading into respiratory bronchioles whose walls are already dotted with air sacs.

What it does

Mark the switch from carrying air to exchanging gas.

Keeping it well

This is where smoke damage starts: in COPD they narrow and collapse early, trapping air. Stopping smoking at any age slows the decline; spirometry confirms the diagnosis in someone with years of cough or breathlessness.

Related conditions