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.
These and other retirement income streams produced an average income of $31,742 for people age 65 and older in 2012, according to a recent AARP Public Policy Institute analysis of Census Bureau data. Here's how older Americans are paying their bills in retirement:
Yet, across the country, seniors are living off a median household income of $35,107, or only 57 percent of the median income of their younger counterparts aged 45 to 64, according to an analysis of 2011 U.S. Census Bureau data by Interest.com, a financial information website owned by Bankrate.com.