the left lung is divided into 2 parts in mammals
2!
Right now it is 1 whole. Back then it was divided into 5 parts
A pig typically has seven lung lobes. These lobes are divided into four on the right side and three on the left side.
The right lung contains three lobes. The left lobe only has two. Because of the heart on the left side, the left lung only has two lobes to make more room for the heart to pump on that side.
it can be divided into three parts
There is 3 lubes in the left lung
After the mainstem bronchus, two secondary bronchi supply the left lung (and three supply the right lung).
Moth is divided into three parts
4
2
Each lung has more than one "lobe" or section. The right lung has three, and the left lung has only two to leave room for the heart where the upper left lobe would be.
right lung=3lobes left lung has 2lobes