![]() ![]() The heart functions as a double ventricle. Though they can directly impact each other, they receive and send blood to different locations.įigure 2. The diagram also does an excellent job of solidifying the idea that the left atria and left ventricle are functionally separate from the right atria and right ventricle. This simplified schematic provides a visualization that may promote a better understanding. This figure was included because it shows the path of blood through the heart, body, and lungs on a macroscopic scale. The right heart is responsible for pumping blood across the lungs, referred to as pulmonary circulation. The left heart is responsible for pumping blood from the left ventricle and directing the flow to the tissues, otherwise referred to as systemic circulation. These pumps present functionally different purposes. The two pumps that comprise the heart are the left heart and the right heart. The heart is composed of two pumps and pipes. Compartmentalization of the Circulatory System ![]() ![]() Why is this ordered pattern of depolarization important for coordinated contraction of the cardiac myocytes? Hint: Think about the significance the depolarization- contraction relationship has on proper blood flow. When looking at this diagram, take note that the left ventricle of the heart is much bigger and more muscular than the right because it has the hard job of pumping the oxygenated blood through the aorta to the rest of the body.ĭescribe the electrical pathway of depolarization in the heart. Key anatomical structures are labelled and the flow of electrical activity is illustrated by the white arrows. Schematic cross sectional diagram of the heart. The white arrows illustrate the pathway of electrical conductance between these structures of the heart.įigure 1. The figure also highlights the specialized electrical conducting components such as the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and the Purkinje fibers. The figure is labeled to showcase the heart’s basic anatomical structures, including right and left atria and ventricles, and the aorta. This diagram showcases the heart through the orientation of the frontal plane. Specialized Conduction Components of the Heart When you are looking at a heart, remember it is in reference to anatomical position (the left and right of the specimen, not your own). ![]()
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