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.
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.