Identify the tagged structure :

The visceral pericardium is the same as the

During ventricular systole, the

The following are structural components of the conducting system of the heart:1 – Purkinje fibers2 – AV bundle and branches3 – AV node4 – SA node The sequence in which excitation would move through this system is

Which of the following would be occurring during ventricular diastole?

What occurs at the area labeled “D” on the graph?  

Identify the tagged blood vessel :

The QRS complex on the following graph is produced by:

If the cardioacceleratory centers are activated, the pacemaker cells will ________________.

What occurs at “A” on the graph?