Mechanical Advantage And Lever Types In Anatomy

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Different Lever Types In The Human Body

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Define Mechanical Advantage
The ratio of output force to input force.
Mechanical Advantage Equation
MA=L(e)/L(r)   Mechanical Advantage=length of the effort arm/length of resistance arm
1st Class Lever
RFE-Resistance, Fulcrum, EffortExample: Atlanto-Occipital Joint of Neck
2nd Class Lever
FRE-Fulcrum, Resistance, EffortExample: Mandible
3rd Class Lever
REF-Resistance, Effort, FulcrumExample: The forearm, when you flex your arm