Which heart structure is responsible for pumping blood into the arteries?

Which heart structure is responsible for pumping blood into the arteries?

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

Answer: (B)

Ventricles are the heart’s main pumping chambers. When they contract (during systole), they generate the high pressure needed to push blood into the arteries—the right ventricle sends blood into the pulmonary artery to the lungs, while the left ventricle sends blood into the aorta to the rest of the body. The atria simply collect blood returning to the heart and help fill the ventricles a bit with the atrial kick, but they don’t propel血 into arteries. Valves regulate one-way flow, and the septum is the wall that separates the heart’s sides.

Ventricles are the heart’s main pumping chambers. When they contract (during systole), they generate the high pressure needed to push blood into the arteries—the right ventricle sends blood into the pulmonary artery to the lungs, while the left ventricle sends blood into the aorta to the rest of the body. The atria simply collect blood returning to the heart and help fill the ventricles a bit with the atrial kick, but they don’t propel血 into arteries. Valves regulate one-way flow, and the septum is the wall that separates the heart’s sides.