Mainstem bronchus - Definition
It refers to the left or the right bronchus - either of the bronchi, the two main branches of the windpipe (trachea) in humans.
Mainstem bronchus - Types
Based on its position and entry into the lungs, this structure is classified into the following two types:
Left Mainstem bronchus
It enters the left lung base. Approximately 5 cm in length, it is longer than its counterpart at the right. However, it has a smaller diameter.
Right Mainstem bronchus
It enters the right lungs. Around 2.5 cm long, it is shorter than the left bronchus but is wider in shape and points in a more vertical direction.
Mainstem bronchus - Function
This respiratory structure is mainly responsible for supplying oxygen to the right and the left lungs to make exchange of gases easier.
Mainstem bronchus - Pictures
We have provided you with a few images to know about the location and visual appearance of this structure.
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