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Which of the following is often the most important data produced by a test market?
Conduction Cells
Specialized cells that transmit electrical impulses within the heart, facilitating coordinated heartbeats.
Aortic Semilunar Valve
The valve that regulates blood flow from the heart into the aorta, preventing backflow into the ventricle.
Lubb (S1)
The sound made by the closure of the mitral and tricuspid valves at the beginning of systole, commonly referred to as the "first heart sound."
Dupp (S2)
The sound made by the heart's valves closing in the cardiac cycle, often associated with the splitting or duplication of the second heart sound.
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