Final answer:
The cardiac chambers that are enlarged in ventricular septal defect are right ventricle and left ventricle.
Step-by-step explanation:
A ventricular septal defect (VSD) is a congenital heart defect characterized by an abnormal opening in the septum (the wall) between the two lower chambers of the heart, known as the ventricles. This opening allows blood to flow directly from the left ventricle to the right ventricle, or vice versa, instead of following the usual pathway through the aorta to the body.
The cardiac chambers that are enlarged in ventricular septal defect are right ventricle and left ventricle.