Number of Black Senators. March 2, 2010, charm, 1 Comment. How many black senators are there in the U.S.? 1. The present 111 th U.S. Congress has a lone Senator in the person of Rep. Roland Burris of Illinois. This is based on a statistical profile released by the Congressional Research Service in February 2010. To date, there have only been 6 black senators in the U.S. Senate. The first was in Senator Hiram Rhodes Revels of Mississippi who was voted in 1870.
What is a low blood pressure reading? A low blood pressure reading is having a level that is 90/60mmHg, or lower. Only one of the numbers has to be lower than it should be to count as low blood pressure. In other words: if the top number is 90 or less (regardless of the botton number) this may be low blood pressure.
1 Blood and blood vessels. 2  Blood and blood vessels - Blood pressure. 3  Low blood pressure.  Hypotension, or low blood pressure, means that the pressure of blood circulating around the body is lower than normal or lower than expected.