Caleb's heart allows oxygenated and deoxygenated blood to mix. based on your knowledge of the heart and the great vessels, describe other anatomical abnormalities that cause the mixing of oxygenated and deoxygenated blood.

Atrioventricular Canal Defect is an abnormality that causes the mixing of blood. The condition occurs when there's a hole between the heart's chambers and problems with the valves that regulate blood flow in the heart. Sometimes called endocardial cushion defect oratrioventricular septal defect, atrioventricular canal defect is present at birth (congenital).