Final answer:
The left ventricle (LV) should be cannulated during cardiac surgery because it is the major pumping chamber for the systemic circuit. Cannulating the left ventricle helps regulate blood flow and ensures effective functioning of the heart during surgery.
Step-by-step explanation:
The left ventricle (LV) should be cannulated during cardiac surgery because it is the major pumping chamber for the systemic circuit. This means that it is responsible for pumping oxygenated blood into the aorta, which then distributes it to the rest of the body. By cannulating the left ventricle, surgeons can ensure that the blood flow is properly regulated during the surgery and that the heart is able to function effectively.