Which chambers force blood out of the heart?

Which chambers force blood out of the heart?

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

Answer: (B)

The ventricles are the pumping chambers that force blood out of the heart. During systole, they contract with enough power to push blood into the pulmonary artery from the right ventricle and into the aorta from the left ventricle. The atria simply collect blood and help fill the ventricles, but they don’t eject blood out of the heart. Valves ensure one-way flow and prevent backflow, while the septum is a wall that separates the chambers and isn’t involved in pumping.

The ventricles are the pumping chambers that force blood out of the heart. During systole, they contract with enough power to push blood into the pulmonary artery from the right ventricle and into the aorta from the left ventricle. The atria simply collect blood and help fill the ventricles, but they don’t eject blood out of the heart. Valves ensure one-way flow and prevent backflow, while the septum is a wall that separates the chambers and isn’t involved in pumping.