Inferior Lobes of the Lungs Displayed, Posterior View

Description

Posteriorly oriented lungs are rendered with emphasis on the inferior (lower, basal) lobes, which occupy the caudal third of each hemithorax and taper toward the diaphragmatic surface. The oblique fissure (fissura obliqua) forms a clear superolateral boundary, separating the inferior lobes from the superior lobes on both sides, while the left lung remains bilobed in keeping with normal anatomy. Medially, the paravertebral margins of the lungs align with the thoracic vertebral column, and laterally the basal segments sweep toward the costophrenic recess. Teaching the inferior lobes from a posterior perspective matters because gravity-dependent pathology collects here in the upright patient, and the posterior basal segments are a frequent site for aspiration pneumonia and dependent atelectasis. Bronchopulmonary segment orientation also becomes intuitive in this view, since the lower lobe bronchi course posteroinferiorly and their segmental distribution helps explain why a posterior lower-lobe opacity on chest radiograph or CT often localizes to the superior segment (S6) or the posterior basal segment (S10). Clear fissural anatomy. It sets expectations for normal fissure position when interpreting imaging or planning a posterolateral thoracotomy approach. Use this artwork in gross anatomy and respiratory system modules to anchor lobe and fissure identification before students encounter axial CT slices, and in radiology teaching files to correlate posterior lower-lobe disease patterns with lobar anatomy. Medical publishers can pair it with content on aspiration, pleural effusions layering in the posterior costophrenic angle, and segment-based bronchoscopy or lobectomy planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.