, 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.
Best Answer: The Mississippi was essential to the Confederacy for goods and supplies, if the Union could control it they would cripple the confederate economy and strangle their army. They eventually did gain control after the months long siege of Vicksburg, which along with Gettysburg, was a turning point in the war. Control of the Mississippi River in the Civil War allowed the Union to cut Texas, Louisiana and Arkansas off from the rest of the Confederacy.