If we consider each function in any company or organization is a part or a system in the human body?

Human body contains; Brain, Nerves system, Immunity system, Sense system, Heart, Muscular system, Bone Skeleton, and many other systems and parts What the Top Management would be? What the HR would be? What the Finance would be? What the IT would be? What the Sales would be? What the Quality Assurance would be? What the Quality Control would be? What the Supply Chain would be? What the Internal Audit would be? What the Marketing would be? What the Administration would be?