The electrical system of your heart is the power source that makes this possible. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
Andrew Jackson, born on March 15, 1767, was the first President to be born in a log cabin. Martin Van Buren, born on December 5, 1782, was the first President to be born a citizen of the United States. Previous Presidents had been born before the American Revolution, and thus were born British subjects.
The five-star rank was first created on Dec. 14, 1944. Four Army general officers were promoted to general of the Army that month. Their names and dates of rank are: George C. Marshall, Dec. 16, 1944; Douglas MacArthur, Dec. 18, 1944; Dwight D. Eisenhower, Dec. 20, 1944; and Henry H. Arnold, Dec. 21, 1944.