The two lower chambers are called the

The two lower chambers are called the

• A. ventricles
• B. atria
• C. valves
• D. septum

Answer: (A)

The two lower chambers are the ventricles. In the heart, the upper chambers are called atria and receive blood, while the lower chambers are ventricles and pump blood out. The right ventricle pushes blood to the lungs, and the left ventricle pumps blood to the rest of the body, which is why the ventricles have thicker walls and generate higher pressure. The other terms refer to different parts: atria are the upper chambers, valves are the flaps that regulate blood flow, and the septum is the wall that divides the left and right sides.

The two lower chambers are the ventricles. In the heart, the upper chambers are called atria and receive blood, while the lower chambers are ventricles and pump blood out. The right ventricle pushes blood to the lungs, and the left ventricle pumps blood to the rest of the body, which is why the ventricles have thicker walls and generate higher pressure. The other terms refer to different parts: atria are the upper chambers, valves are the flaps that regulate blood flow, and the septum is the wall that divides the left and right sides.