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.
One of the characteristics that allows USAA to operate differently than most other Fortune 500 companies is that it is not a corporation. The United Services Automobile Association is an inter-insurance exchange, the establishment of which is provided for under the Texas Insurance Code.SAA offers a range of personal property and casualty (P&C) insurance, including automobile insurance, homeowner insurance, renters insurance, as well as umbrella and personal property insurance. In addition to P&C insurance, USAA provides whole life insurance, term life insurance, and annuities.