Physiology General 253d6c01 True regarding vascularity of lung is A Hypoxia causes vasodilation B Pulmonary resistance is half of the systemic vascular resistance C Perfusion is more in the apical lobe than in base D Distended pulmonary veins in the lower lobe High-Yield Explanation In lungs, the lower lobes get perfused more due to the effect of gravity. So the lower lobe vessels are more distended.