beta-adrenergic blocking agent. See antiadrenergic. Any of a class of agents that blocks 1 and/or 2 adrenergic receptors in the nervous system, modulating cardiac functions, respiratory functions and the dilation of blood vessels. Effect. Slowed heart rate, lowered blood pressure, reduced anxiety.
Born Lindsay Marie Whalen on May 9, 1982, in Hutchinson, Minn. Married former University of Minnesota All-American golfer Ben Greve on Oct. 6, 2008, in Hutchinson, Minn. Daughter of Neil and Kathy Whalen, is the oldest of five children. Majored in sports management.
Ryan married actor Dennis Quaid on February 14, 1991. They are said to have fallen in love during the shooting of their second film together, D.O.A. They have one child together, Jack Quaid, born April 24, 1992. She and Quaid separated and their divorce became final on July 16, 2001 amid rumors she was dating her then costar Russell Crowe.