The right and left lungs are both soft., They are spongy, cone-shaped lungs that are separated medially by the mediastinum. The right lung contains 3 lobes superior, middle, and inferior. The left lung has 2 lobes, superior and inferior. The Right main bronchus is wider, shorter than the left main bronchus, which is thinner and longer. The right subdivides into three lobar bronchi, while the left main bronchus divides into two.