Question

What will happen if the septum is absent in the human heart? [2 marks]

Answer 1

• In the heart, the oxygenated blood gets transported through the left atrium and ventricle while the deoxygenated blood gets transported through the right atrium and ventricle. ( 1 mark)
• The septum is a structure that is present between the left and right chambers. It prevents the intermixing of the oxygenated and deoxygenated blood. (0.5 marks)
• Therefore, if the septum is absent the oxygenated and deoxygenated blood will intermix in the heart. (0.5 marks)