Final answer:
Checks and balances in place regarding the appointment of executive department heads involve the president's power to appoint, Senate confirmation, and the Supreme Court's ability to exercise judicial review.
Step-by-step explanation:
Checks and balances in place regarding the appointment of executive department heads are an integral part of the American government. The president has the power to appoint department heads, but these appointments must be confirmed by the Senate. This provides a system of checks and balances, where the executive and legislative branches have influence over each other in the appointment process. Additionally, the Supreme Court can also check the power of the executive branch through judicial review.