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.
If the veteran served with the United States military forces in Russia, the ending date is April 1, 1920: 12/07/1941 to 12/31/1946: 06/27/1950 to 01/31/1955: 02/28/1961 to 05/07/1975 for Veterans who served in the Republic of Vietnam during that period; otherwise 08/05/1964 to 05/07/1975