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Nodule of semilunar valve
Other Terms: Nodule of semilunar valve, Semilunar valvule nodulus
The nodules of the semilunar valves are small fibrous nodules that are located in the middle of the flaps located in the pulmonary valve. From this nodule, fibers radiate to the attached base of the flap. When the opening is closed by these flaps, the nodules of the semilunar valve come together and fill up a triangular opening.