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.
This scheme forced the national government to pass the Indian Removal Act on May 28, 1830, in which President Jackson agreed to divide the United States territory west of the Mississippi into districts for tribes to replace the land they were removed from.