A-LevelBiologyTransport in mammals9700/12 · Oct/Nov 2014 · Q311 Mark
One type of congenital heart defect is called atrial septal defect (ASD) where the left and right atria are not completely separated. ASD usually results in blood moving from the left atrium into the right atrium. This will cause increased blood pressure in the right atrium and decreased blood pressure in the left atrium. Which row describes the other effects of ASD on blood pressure and oxygenation?
Ablood pressure in pulmonary artery: decreased, blood pressure in aorta: increased, % oxygenation of blood in pulmonary artery: decreased
Bblood pressure in pulmonary artery: decreased, blood pressure in aorta: increased, % oxygenation of blood in pulmonary artery: increased
Cblood pressure in pulmonary artery: increased, blood pressure in aorta: decreased, % oxygenation of blood in pulmonary artery: decreased
Dblood pressure in pulmonary artery: increased, blood pressure in aorta: decreased, % oxygenation of blood in pulmonary artery: increased
✓ Correct answer
D: blood pressure in pulmonary artery: increased, blood pressure in aorta: decreased, % oxygenation of blood in pulmonary artery: increased
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