Bone or skeletal lever. Definition

Medical Definition: bone or skeletal lever

In the various movements taking place under the influence of muscle contractions, skeletal parts can be compared with the lever. The fixed point corresponds to the joint, the power is represented in the muscle that moves the bone, which acts as a lever arm, and resistance is the force that has to overcome. The three types of levers are found on the musculoskeletal system. The first kind is relatively abundant, an example is the head held balanced on the spine. The second-class has only one example in man: When you lift the heel and whole body resting on the toes. The third genre is by far the most common in the body: found in most limb movements, especially flexion and extension movements of the elbow, knee, etc.

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