©2020 by The Goofy Anatomist

7.4. Blood Flow Through the Heart

Blood Vessels and Blood Flow

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The heart is a syncytium. This means that it can conduct an electrical signal throughout its structure using gap junctions, ensuring that the cardiac muscle cells in each chamber wall contract together.

There is a variety of blood vessels associated with the chambers of the heart. These are best understood by studying the route of blood through the cardiovascular system (see also the accompanying diagram).

  • Deoxygenated blood enters the right atrium through the inferior vena cava.

  • Right atrium to right ventricle.

  • lood pumped from the right ventricle into the pulmonary trunk (then x2 pulmonary arteries), then arrives in the lungs. Blood is oxygenated here.

  • Pulmonary veins drain blood from the lungs to the left atrium.

  • Left atrium to left ventricle.

  • Blood pumped from the left ventricle into the aorta, travels around the body and becomes deoxygenated.

  • Back to the start.