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Planes, Axis and Levers - Coggle Diagram
Planes, Axis and Levers
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Levers
Effort- The force applied to move resistance or weight; in the body, effort is provided by muscles exerting a force
Load- The load to be moved by a lever system; usually this involves weight when the body's lever systems are involved
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First class lever- Found at the elbow joint, where the triceps cause extension of the lower arm
Second class lever- Found at the ankle, where the gastrocnemius causes plantar flexion
Third class lever- The majority of the body's joints act as a third class levers, e.g the biceps acting at the elbow to cause flexion
Mechanical advantage- The benefit to a lever system of having either a short effort arm (giving rapid movements over a large range of movement) or a short resistance arm
(giving the advantage of being able to move heavy weight).
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