The elbow is a part of the body and is an area between the upper and subordinate regions of the arm that surrounds the elbow joint. It is a complex joint formed of three types of bones called radius, humerus and ulna.
The effort is applied nearer to the fulcrum than the load.
How is the movement of the elbow related to lever?
- The elbow is considered a third-class lever because the effort is applied closer to the fulcrum than the load. The third type of lever is very common in the body.
- A lever is a type of system that consists of rod that are fixed at the fulcrums. The types of the levers are based on the placement of load, fulcrum and the effort between each other.
- In the third-class lever, the force exerted is between the point of support and the resistance. The elbow is similar to a clamp, functioning predominantly as flexion and extension motions.
Therefore, option B is correct.
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