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  1. Your heart is a powerful muscle that pumps oxygen-rich blood out to your body. Once it leaves your heart, this blood flows through many blood vessels to reach every part of your body, from the major organs (like your brain) to the smallest tissues at the tips of your toes.

  2. Normal heart anatomy and physiology need the atria and ventricles to work sequentially, contracting and relaxing to pump blood out of the heart and then to let the chambers refill. When blood leaves each chamber of the heart, it passes through a valve that is designed to prevent the backflow of blood.

  3. Nov 7, 2024 · A: The heart works as a double pump, sending deoxygenated blood to the lungs for oxygenation and then pumping the oxygenated blood to the body. This process involves the right and left sides of the heart, each with an upper atrium and a lower ventricle. Valves between the chambers ensure blood flows in the correct direction.

  4. Mar 24, 2022 · Oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava. The blood enters the heart's right atrium and is pumped to your right ventricle, which in turn pumps the blood to your lungs.

  5. Jun 6, 2023 · The left ventricle pumps oxygen-rich blood out of the heart and into the body (systemic circulation) through an artery called the aorta. The first blood vessels that branch off from the aorta are the coronary arteries.

    • 2023/06/06
  6. myocardium, a thick, muscular middle layer that squeezes (contracts) and relaxes to pump blood out of the heart to the rest of your body. endocardium, a thin, inner layer that makes up the lining of the 4 chambers and the valves in your heart.

  7. Sep 9, 2023 · The atria and ventricles work together, contracting and relaxing to pump blood out of the heart in a coordinated and rhythmic fashion. As blood leaves each chamber of the heart, it...

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