Question 1
The P wave of a normal electrocardiogram indicates ________.
◦ ventricular depolarization
◦ atrial repolarization
◦ ventricular repolarization
◦ atrial depolarization
Question 2
Blood within the pulmonary veins returns to the ________.
◦ left atrium
◦ left ventricle
◦ right ventricle
◦ right atrium