1 In 1990, Barack Obama was elected as the first black president of the Harvard Law Review. 2  Obama, who graduated from HLS in 1991, would later represent Illinois in the U.S Senate, and in 2008 would become the 44 th President of the United States, and the first African-American president.
Most cancers in the lung are carcinomas-cancers of epithelial cells. The top pair of images shows the normal epithelium of the bronchi. This photomicrograph is greatly enlarged. The next three pairs of images show three successive stages of abnormal changes in the bronchial epithelium commonly found in smokers.
Endothelium is the internal lining of your blood vessels 10. Viscera a. A delicate layer called a serous membrane lines the walls of these internal cavities and covers the surfaces of the enclosed viscera. 11. Thoracic Cavity a. Each pleural cavity, which contains a lung, is lined by a shiny, slippery serous membrane that reduces the friction as the lung expands and recoils during respiration. b. The serous membrane lining a pleural cavity is called pleura. The visceral pleura covers the outer surfaces of the lung, the parietal pleura covers the inner surfaces of the lung. c.