The ________ lines the chambers of the heart, covers the heart valves, and is continuous with the endothelium.

Figure 20-1 The Heart Use Figure 20-1 to answer the following questions: Which chamber receives oxygenated blood from the pulmonary circuit?

During exercise,

Paul falls on an axe and cuts several major blood vessels in his leg. As a result of this injury you would expect to observe all of the following except a(an)

The backward flow of blood from a ventricle to its atrium or from a outflow vessel to its ventricle is called

The structures responsible for distributing excitation to the contractile cells are

During increased exercise

Which event occurs during ventricular systole?

When the left ventricle contracts, the diameter of the ventricular chamber

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: What volume is labeled “F” on the graph?