ANATOMY

Detailed explanation-1: -The left lung consists of two lobes: the left upper lobe (LUL) and the left lower lobe (LLL).

Detailed explanation-2: -The left lung has only two formal lobes because of the space taken up in the left side of the chest cavity by the heart, though it does have the lingula, which is similar to a lobe.

Detailed explanation-3: -Lobes and Fissures of the Lungs The oblique fissure in the left lung separates the superior and the inferior lobe. The oblique and horizontal fissure divides the lungs into superior, middle and inferior lobes. Thus the right lung has three lobes while the left has two.

Detailed explanation-4: -A left lung with four lobes: a new discovery during the thoracotomy for recurrent primary spontaneous pneumothorax.

Detailed explanation-5: -Each lung is divided into lobes-the left lung has two and the right lung has three-which are similar to balloons filled with sponge-like tissue.