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:
Home / Get the Facts / Statistics. The average monthly Social Security benefit paid to retired workers in 2016 is $1,347.59, or $16,171.08 a year. The average monthly Social Security benefit paid to widows & widowers is $1,291.48, or $15,497.76 per year.