Parasympathetic control, the braking system in the heart, is mediated by which anatomical structure?      

For a resting potential in a cardiac cell to exist, there must be an:

The first part of the aorta as it leaves the heart is the:

Which of the following occurs during depolarization of a cardiac cell?

You are evaluating a patient who inhaled a toxic gas.  The patient complains of a loss of smell, which cranial nerve could be compromised?

You have administered a medication to a patient, resulting in a decreased speed of cardiac impulse conduction. This drug is most accurately described as having a ________ effect.

During which phase of the cardiac cycle does ventricular filling begin?

Which of the following occurs during depolarization of a cardiac cell?

This man is in love with Desdemona. She is not in love with him. 

The first act of Othello is set in