, 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.
Des Allemands developed as a town after the Civil War, being home earlier only to the New Orleans Opelousas and Great Western train depot (1856) and a few scattered settlers. It was also the site of one of St. Charles Parishâs two Civil War skirmishes, this one in 1862.