Heart
The heart is a muscular organ located in the midline of the thoracic cavity. Often described as a “pump,” the heart is responsible for receiving deoxygenated blood, recycling it through the lungs, and supplying oxygenated blood to the body.
Table of Contents
The Chambers
The heart contains four inner chambers: two atria (upper chambers) and two ventricles (lower ventricles).
Pulmonary Trunk
The pulmonary trunk is a vessel that brings deoxygenated blood from the left ventricle into the lungs. Pulmonary veins return the oxygenated blood from the lungs back into the heart.
Aorta
The aorta is a major vessel that receives oxygenated blood from the left ventricle and supplies it to the rest of the body.
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