The air we breathe in goes through the voice box and then through the windpipe. The windpipe divides into the two main bronchi. Each of these main bronchi branches into smaller bronchi and bronchioles. At the end of the bronchioles, there are groups of tiny air sacs, which are called alveoli or pulmonary vesicles.

Comment on this page

What would you like to share with us?

We welcome any feedback and ideas - either via our form or by We will review, but not publish, your ratings and comments. Your information will of course be treated confidentially. Fields marked with an asterisk (*) are required fields.

Please note that we do not provide individual advice on matters of health. You can read about where to find help and support in Germany in our information “How can I find self-help groups and information centers?

Print page