Which heart chambers are the superior cavities that receive blood from outside the heart?

Which heart chambers are the superior cavities that receive blood from outside the heart?

• A. Atria
• B. Ventricles
• C. Valves
• D. Septa

Answer: (A)

Receiving blood from outside the heart happens in the upper chambers called atria. These superior chambers collect blood before it moves into the ventricles: the right atrium receives deoxygenated blood from the body through the superior and inferior vena cavae and coronary sinus, while the left atrium receives oxygenated blood from the lungs via the pulmonary veins. The ventricles are the lower chambers that pump blood out to the lungs and the rest of the body. Valves prevent backflow between chambers, and septa are the walls that separate chambers inside the heart. So the atria are the superior cavities that receive blood from outside the heart.

Receiving blood from outside the heart happens in the upper chambers called atria. These superior chambers collect blood before it moves into the ventricles: the right atrium receives deoxygenated blood from the body through the superior and inferior vena cavae and coronary sinus, while the left atrium receives oxygenated blood from the lungs via the pulmonary veins. The ventricles are the lower chambers that pump blood out to the lungs and the rest of the body. Valves prevent backflow between chambers, and septa are the walls that separate chambers inside the heart. So the atria are the superior cavities that receive blood from outside the heart.