Autonomic outflow from the medulla is divided principally into sympathetic and parasympathetic (vagal) branches. Efferent fibers of these autonomic nerves travel to the heart and blood vessels where they modulate the activity of these target organs. The heart is innervated by vagal and sympathetic fibers.
Best Answer: The cold war didn't have a specific start or ending time but if i had to give one I'd say that it started right after WWII (1945) and ended in the early 90's, probably 1991, the fall of the Soviet Union. Source(s): xzorion54 Â· 9 years ago.
During his presidency, Eisenhower managed Cold War-era tensions with the Soviet Union under the looming threat of nuclear weapons, ended the war in Korea in 1953 and authorized a number of covert anti-communist operations by the CIA around the world.