Which of the following sequences correctly depicts the flow of blood through the heart to the lungs in order for gas exchange to occur?
A. right atrium, right ventricle, lungs, pulmonary artery
B. right atrium, right ventricle, pulmonary artery, lungs
C. right ventricle, right atrium, lungs, pulmonary artery
D. right ventricle, right atrium, pulmonary artery, lungs
Answer: B