Question

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joints; bones act as levers, joints act as the pivot, muscles provide the effort to move the load

Explanation:

In the human body's musculoskeletal - system, bones function as levers, joints act as the pivot (fulcrum), and muscles supply the force to move a load. Weight can be considered as a type of load. The terms 'weight', 'load', 'fulcrum', and 'levers' are used to describe the mechanical aspects of how the body moves.

Answer:

The text describes the mechanical roles of bones, joints, and muscles in the human body's movement, comparing them to components of a lever - like system.