Hannah, a newborn baby, needs surgery because she was born with an aorta that arises from the right ventricle and a pulmonary trunk that issues from the left ventricle, a condition called...

Hannah, a newborn baby, needs surgery because she was born with an aorta that arises from the right ventricle and a pulmonary trunk that issues from the left ventricle, a condition called transposition of the great vessels. What are the physiological consequences of this defect?

Which of the following is true about veins? (a) Venous valves are formed from the tunica media. (b) Up to 35% of total body blood is in venous circulation at any given time. (c) Veins have a small lumen in relation to the thickness of the vessel wall. (d) Veins are called capacitance vessels or blood reservoirs.