Implementation Manager (IM) Specialist CHTS Practice Test

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Which statement regarding the atria is NOT true?

Atria are the upper chambers
The two atria are separated by a septum
Atria pump blood out of the heart
Atria receive blood into the heart

The correct answer is: Atria pump blood out of the heart

The statement that the atria pump blood out of the heart is not true because the primary function of the atria is to receive blood returning to the heart, rather than to pump it out. The atria serve as holding chambers that gather blood before it flows into the ventricles. The right atrium receives 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. After the atria fill with blood, they contract to push the blood into the ventricles, which are responsible for pumping the blood out of the heart to the lungs and the rest of the body. The other statements are accurate: the atria are indeed the upper chambers of the heart, they are separated by a septum, and they do have the critical role of receiving blood into the heart.