Step 7: Add the pulmonary trunk. Blood from the right ventricle flows into the pulmonary trunk, left and right pulmonary arteries that deliver blood to the lungs.
This completes the right sided pump that delivers de-oxygenated blood to the lungs for oxygenation before the left sided of the heart pumps oxygenate blood to the body. The accompanying diagram will help you understand how the flow of blood move through the right and left heart.
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Step 8: When we take away the myocardium (muscles of the heart) and the vessels and only expose the tricuspid and pulmonary valves relative to the thoracic cage, we see that the valves are hidden behind the sternum..
Step 9: Dissect away the body of the sternum to visualize where these valves lie. The importance of this will become obvious later in this lab session.
