Final answer:
If a blockage occurred in the interventricular foramina, the likely result would be that the ventricles would contract, but the atria would not.
Step-by-step explanation:
If a blockage occurred in the interventricular foramina, the likely result would be that the ventricles would contract, but the atria would not. This is because the atrioventricular node passes the signal to the Purkinje fibers, which allow the ventricles to contract.