- Tendons and Joints = bolts that link beams. Both are used to connect the structure of a building/body together.
- Heart = Centrifugal water pumps / furnace / air circulator. Pumps blood which contains oxygen to the body. Similar to how a water pumps/furnaces/air circulator move water/heat/air through a building
- Liver/Kidneys = filters/waste management. Both can remove toxins from the environment and repurpose waste in the body/building.