-distribution: mesothelium: the simple squamous epi. which line the inner surface of body cavities such as thoracic, pericardiac and abdominal cavities endothelium the simple squamous epi. which line the inner surface of cardiovascular and ymphatic system other place: alveoli, parietal layers of renal capsule --function: a) transport of materials b) facilitates movement of viscera---distribution: mesothelium: the simple squamous epi. which line the inner surface of body cavities such as thoracic, pericardiac and abdominal cavities. endothelium: the simple squamous epi.which line the inner surface of cardiovascular and lymphatic system. other place: alveoli,parietal layers of renal capsule. ---function: a) transport of materials b) facilitates movement of viscera