The greatest difference in the concentration of respiratory gases is found in which of the following pairs of mammalian blood vessels?
A) the pulmonary vein and the jugular vein
B) the veins from the right and left legs
C) the pulmonary artery and the inferior vena cava
D) the pulmonary vein and the aorta
E) the inferior vena cava and the superior vena cava

Question

Quizplus · Accepted Answer

The greatest difference in the concentration of respiratory gases is found between the pulmonary vein and the jugular vein because the pulmonary vein carries oxygenated blood from the lungs to the heart, while the jugular vein carries deoxygenated blood from the head back to the heart, showcasing a significant difference in oxygen concentration.

The Greatest Difference in the Concentration of Respiratory Gases Is