Tag Jeffrey L. Myers

Mediastinum

Generalities The mediastinum is the portion of the thoracic cavity located between the pleural cavities, extending anteroposteriorly from the sternum to the spine and from the thoracic inlet superiorly to the diaphragm inferiorly. The numerous organs and structures it contains…

Pleura

Normal Anatomy of the Pleura Both the visceral and parietal pleural layers have a lining of mesothelial cells endowed with a continuous basement membrane and resting on a layer of well-vascularized fibroelastic connective tissue matrix. The submesothelial connective tissue is…

Lung

Normal Anatomy Grossly the lungs are subdivided into lobes, three on the right (upper, middle, and lower) and two on the left (upper and lower). Each lobe is supplied by a dedicated lobar bronchus with a companion artery and vein…