, Physiologist. 1  In four chambered avian and mammalian hearts, the two upper chambers are known as the atria. The atria are believed to act as primer pumps which boost the end diastolic volume (the volume at the end of ventricular filling) just before contraction of the ventricles.
Disunion follows the Civil War as it unfolded. New Orleans was the jewel of the Confederacy. In addition to being the Southâs largest city, it boasted considerable industry that produced ironclads, munitions and uniforms, among other items. More important, it controlled access to the Mississippi River from the Gulf of Mexico.
The Vietnam War was important in that the will of the people finally won out over the United States' government's desire to maximize profits to the Military-Industrial complex that Eisenhower had warned the people about. The Vietnam War was necessary to a point. Vietnam War was a perfect example of getting in to do something for a good cause, but then losing the war with a bad military planning. America was right in there choice of taking action in Vietnam War.