Congenital heart defects change the normal flow of blood through the heart. There are many types of congenital heart defects. They range from simple defects with no symptoms to complex defects with severe, life-threatening symptoms. Congenital heart defects are the most common type of birth defect. They affect 8 out of every 1,000 newborns. Each year, more than 35,000 babies in the United States are born with congenital heart defects. Many of these defects are simple conditions.
Descriptions of Pleural cavity. Pleural cavity: The space enclosed by the pleura, which is a thin layer of tissue that covers the lungs and lines the interior wall of the chest cavity. Source: National Institute of Health. Pleural cavity: the cavity in the thorax that contains the lungs. Source: WordNet 2.1.
Lung anatomy: lobes and segments. The lungs are covered by the visceral pleura, which is contiguous with the parietal pleura as it reflects from the lateral surfaces of the mediastinum. The visceral pleura forms invaginations into both lungs, which are called fissures.