Sherwood- Chapter 9

Objective:  To understand that the heart is a pump that imparts pressure to the blood to establish a pressure gradient needed to get that blood to vital tissues.

1.  Circulatory system
        a.  open
        b.  closed
2.  Organization of cardiac muscle fibers
        a.  desmonsomes
        b.  gap junctions
3.  Electrical activity of the heart
        a.  contractile cells
        b.  autorhymthmic cells
        c.  pacemaker activity
4.  Cardiac cells capable of autorhythmicity
        a.  sinoatrial node
        b.  atrioventricular node
        c.  bundle of His
        d.  Purkinji fibers