The term 'atriums' refers to which part of the heart?

The term 'atriums' refers to which part of the heart?

• A. Lower chambers
• B. Heart valves
• C. Upper chambers
• D. Blood vessels

Answer: (C)

The main concept here is the heart’s chamber roles. The atria are the two upper chambers and their job is to receive blood before it moves into the ventricles. The right atrium collects deoxygenated blood from the body through the superior and inferior vena cavae, while the left atrium receives oxygenated blood from the lungs via the pulmonary veins. From the atria, blood passes into the lower chambers, the ventricles, which then pump it out to the lungs or the rest of the body. Valves sit between the atria and ventricles, and blood vessels are outside the heart, carrying blood to or from it. So the term in question refers to the upper chambers of the heart.

The main concept here is the heart’s chamber roles. The atria are the two upper chambers and their job is to receive blood before it moves into the ventricles. The right atrium collects deoxygenated blood from the body through the superior and inferior vena cavae, while the left atrium receives oxygenated blood from the lungs via the pulmonary veins. From the atria, blood passes into the lower chambers, the ventricles, which then pump it out to the lungs or the rest of the body. Valves sit between the atria and ventricles, and blood vessels are outside the heart, carrying blood to or from it. So the term in question refers to the upper chambers of the heart.