Each lung is divided into lobes by fissures. Both lungs have oblique fissures and the right is further divided by a transverse fissure. The oblique fissure in the left lung separates the superior and the inferior lobes. 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. Each lobe is supplied by a lobar bronchus. The lobes are subdivided by bronchopulmonary segments which are supplied by ... Lung, in air-breathing vertebrates, either of the two large organs of respiration located in the chest cavity and responsible for adding oxygen to and removing carbon dioxide from the blood. Learn about the structure, location, and function of the lungs, a major organ of the respiratory system. Find out about common lung diseases, tests, and treatments. The left lung has two lobes and one fissure; while the right lung has three lobes and two fissures. The lobes are then further subdivided into bronchopulmonary segments; such that the left lung has 9 – 10 segments, while the right lung has 10.
