Left ventricle – internal features
The left ventricular wall is a lot thicker than the right. There are two papillary muscles. The chordae from each muscle go to both the cusps. When the ventricle contracts it pulls the cusps together, thus closing the opening. Ineffective closure of the mitral valve results in mitral regurgitation (blood gushing back into the atrium during ventricular systole).
Dr. S. Chandra
Dr. S. Chandra, Faculty of Medicine, Memorial University of Newfoundland
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