Author: Anonymous

The muscular layer in the wall of a blood vessel is the tunica

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: What occurs at the circled label “5” on the graph?

A heart murmur might be caused by

The _____ collect blood directly from capillary beds.

________ is when the heart can’t maintain adequate cardiac output.

Pacemaker cells isolated from the SA node generate action potentials at ________ beats per minute.

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: