The Gross Anatomy of the Lungs of an Obese Black Male

Description

Anterior thoracic anatomy is rendered through a semi-transparent torso, centering the right and left lungs within the pleural cavities and flanked laterally by the chest wall. The right lung is divided by the horizontal fissure and oblique fissure into superior, middle, and inferior lobes, while the left lung shows a single oblique fissure separating superior and inferior lobes, with the cardiac impression expected along its anteromedial border. At the hilum, the main bronchi enter posteromedial to the pulmonary arteries, then branch toward the lobar bronchi, with the distal bronchial tree leading to alveoli within the peripheral parenchyma. Obesity changes the mechanics around these structures, and that context matters when teaching ventilation and perioperative risk: increased chest wall mass and reduced functional residual capacity predispose to basal atelectasis, where the inferior lobes (inferior and posterior in the upright patient) commonly lose aeration first. The fissures provide clean anatomic boundaries for localizing lobar pneumonia, aspiration patterns, and collapse, and they frame how lobectomy and segmentectomy are planned in thoracic surgery. For bronchoscopy and imaging correlation, seeing the bronchi in relation to lobar anatomy helps explain why right-sided aspiration more often tracks into lower lobe bronchi and the right middle lobe. Use this asset in gross anatomy and respiratory physiology courses, in bariatric anesthesia or critical care teaching on atelectasis prevention (PEEP, recruitment maneuvers), and in textbooks or patient-education materials that need an honest depiction of thoracic organs in an adult Black male body habitus. It also supports radiology primers that pair surface anatomy with internal lobar landmarks before introducing CT, CXR silhouettes, or V/Q distribution. Anatomical accuracy verified by SciePro's Medical Advisory Board.