Medical Wedge How Are Medical Tools Related To Simple Machines?

How are medical tools related to simple machines? - medical wedge

Tools appoint two doctors that are related to simple machines.
Two simple, for each machine and specify what they are accustomed to A.


2 "wheel and axle"
2 "lever"
2 "role"
2 for the corner "
2 for the "slippery slope"
2 for the screw "


A good example is the "knife", which falls into the category of holding and "hospital", the slope is