Which of the following correctly names the two upper chambers of the heart that first receive blood?

Which of the following lists the correct order of blood flow through the heart and lungs, beginning with blood returning from the body?

Identify the correct statement regarding atherosclerosis.

What is the term for reduced oxygen supply to an organ or area of the body, such as the heart? 

Which of the following cardiac rhythm disturbances is the most immediately life-threatening?