Coordinated contractions of cardiac muscle cells in the heart propel blood out of the atria and ventricles to the blood vessels of the left/body/systemic and right/lungs/pulmonary circulatory systems.This complex mechanism illustrates systole of the heart.oordinated contractions of cardiac muscle cells in the heart propel blood out of the atria and ventricles to the blood vessels of the left/body/systemic and right/lungs/pulmonary circulatory systems.
The Union army was intent on gaining control of the Mississippi River in order to divide the Confederacy and weaken its economy. Taking control of the Mississippi prevente â¦ d the western Confederate states of Arkansas, Texas, and Louisiana from providing men and material for the Confederate army.
Mississippiâs Territorial Years: A Momentous and Contentious Affair (1798-1817) J. Michael Bunn and Clay Williams. After centuries of control by several European powers, the land that would become Mississippi became a part of the United States at the close of the 18th century. For the next twenty years, the Mississippi Territory featured international controversy, the arduous establishment of an American government, a flood of immigration, a bitter war, and a divisive path towards statehood.