Ventricle
A ventricle was the chamber which received blood from the atrium and pumped it out, away from the heart. Ventricular fibrillation, a condition affecting the ventricles, could lead to death. ()

In 2369, Ibudan murdered  by perforating the lower ventricle of the clone's heart with a knife. ()

In 2374, Dejaren reached into B'Elanna Torres' chest and grabbed her heart, perforating her fourth ventricle. ()

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Anatomy