AP BIOLOGY

Detailed explanation-1: -A wall of muscle called the septum separates the left and right atria and the left and right ventricles.

Detailed explanation-2: -S. septum (SEP-tum): The septum is a thick wall of muscle that divides the heart. It separates the left and right sides of the heart.

Detailed explanation-3: -The left ventricle is the main powerhouse of the heart, having to pump blood all the way around the systemic circulation. Because of this it has the largest, most muscular walls of any of the chambers. In fact, it is three times as thick as the right ventricle.

Detailed explanation-4: -The left and the right side of the heart is separated by a wall called septum. The partition between the chambers helps to avoid the mixing up of blood rich in oxygen with blood rich in carbon dioxide.

Detailed explanation-5: -The right and left sides of the heart are separated by a muscular wall that prevents blood without oxygen from mixing with blood that has oxygen. The heart also has valves that separate the chambers and connect to major blood vessels.