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  Which statement accurately describes total blood flow?  

  Which part of the circulatory system holds the largest amount of blood?  

  What is the sequence of events in the transmission of an impulse through the heart muscle?  

  The velocity of blood is slowest in the capillaries and pressure of blood is lowest in the veins.   Which of the following is NOT an accurate description of the benefits of slow, low pressure blood in the capillary beds?  

  (another TOUGH ONE… think about the movement of ions) During the plateau phase of a cardiac muscle cell’s action potential, the membrane stays….  

  The main functions of the cardiovascular system include the transport and exchange of respiratory gases, nutrients, and wastes throughout the body.  

  (EASY… don’t think hard on this one) During a cardiac cycle, how many of the four chambers contract at any one time?  

  The plateau phase of an action potential….  

  Which valve prevents the back flow of blood from arteries into the left ventricle when the ventricles relax?  

An example of a “check” the President has on Congress is