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Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: What occurs at the area labeled “C” on the graph?

In what order would excitation move through the conducting system of the heart?  

Trace the pathway of blood through the heart and lungs. (2 X’s each)   ______________________ è ______________________ è ______________________ è ______________________ è ______________________ è ______________________ è Lung è ______________________ è ______________________ è ______________________ è ______________________ è ______________________ è ______________________

Pulmonary veins:

The right pulmonary veins carry ________ blood to the ________.

If a myocardial infarction results in the formation of scar tissue along the pathway of the left bundle branch,

Smooth muscle and elastic tissue in a blood vessel wall is found primarily in the tunica media.

The small vessels that capillaries drain into are called

The pulmonary veins carry blood to the

Capillaries with a perforated lining are called