principal bronchi

FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

The trachea divides into two principal bronchi, one on each side to the respective lung, at the inferior border of the manubrium sternii - the tracheal bifurcation:

  • left principal bronchus
  • right principal bronchus

They form the conduit for air transfer between trachea and lung hila. Macro- and microscopically, the main bronchi closely resemble the trachea.

The main bronchi ramify into lobar bronchi.

Last reviewed 01/2018