For other uses, see Atrium. The atrium (plural: atria) is a blood collection chamber of the heart. It was previously called the auricle, and that term is still used to describe this chamber in, for example, the Mollusca, but in humans that name is now used for an appendage of the atrium.
1 Adult children whose eligible parents have or had a USAA auto or property insurance product.*. 2  Widows and widowers of USAA members who have or had a USAA auto or property insurance policy. * Children must be 18 years or older to be eligible for USAA membership and purchase products in their own name.
USAA is short for United Services Automobile Association, and the name tells you a lot about the company. Where other insurance companies accept military employees, USAA only insures people who belong to the United States Military. They are listed in the Forbes 500 at 189 for revenue and 78th for total assets.