PATHOLOGY

Detailed explanation-1: -There is no mixing of oxygenated and deoxygenated blood in the heart because of a partition called septum. This partition completely separates the left and the right side of the heart. The heart has valves that allow blood to flow only in one direction.

Detailed explanation-2: -The septum helps keep oxygen-rich blood from the lungs from mixing with oxygen-poor blood from the body. It also prevents blood from flowing back into the heart chambers after pumping it out.

Detailed explanation-3: -Oxygenated blood flows only through the left side of the heart, and deoxygenated blood flows through the right side of the heart. The right and the left sides of the heart are separated by atrio-ventricular septal walls.