The boundary of lung pleura ●Lung apex o Upper boundary of the lung o Outer boundary o Inner boundary o Lower boundary: Midclavicular line 6th interspace Midaxillary line 8th interspace Inferior line 10th interspacel Lung apex l Upper boundary of the lung l Outer boundary l Inner boundary l Lower boundary: Midclavicular line 6 th interspace Midaxillary line 8 th interspace Inferior line 10th interspace