Your patient is an 84-year-old male with difficulty breathing and peripheral edema. He tells you he has been suffering for many years with "heart failure" and his condition is worsening, especially with trouble breathing at night. Your knowledge of cardiovascular physiology suggests that his condition could have resulted from the failure of either the right or left side of his heart. Which

chamber of the heart is the strongest, most muscular part of the heart and is primarily responsible for pumping oxygenated blood to the rest of the body?

A) Left atrium B) Left ventricle C) Right atrium D) Right ventricle

B