What Is the Pathway an Oxygen Molecule Would Take Through

Multiple Choice

What is the pathway an oxygen molecule would take through the human circulatory system?

A) systemic tissues → alveoli → pulmonary vein → pulmonary capillaries → systemic capillaries → left ventricle → left atrium → aorta → systemic arteries
B) alveoli → pulmonary capillaries → pulmonary vein → left atrium → left ventricle → aorta → systemic arteries → systemic capillaries → systemic tissues
C) alveoli → pulmonary capillaries → pulmonary artery → right atrium → right ventricle → pulmonary vein → systemic arteries → systemic capillaries → systemic tissues
D) alveoli → pulmonary vein → pulmonary capillaries → systemic capillaries → left atrium → left ventricle → aorta → systemic arteries → systemic tissues