The ankle is a third class lever.

select the best answer from the choices provided.

t
f

False

Explanation:

A lever mechanism allows you to check the action of the bones, which, like levers, multiply the strength of the muscles. Among the main functions of the skeleton are to promote locomotion and allow the development of rapid movements. Muscles can contract sharply but are only able to reduce their length by a small fraction. Thanks to the fact that they are attached to the bones, they can multiply the efficiency of their movement. Thus, when they join the end of a long bone, they can cause a much greater displacement at the other end.

The second gender or inter-resistance lever places the resistance or force to be overcome between the support point and the power. A shorter resistance lever is achieved than the power one, which helps to overcome great resistance although very slowly and with very little travel in its movement.

It is therefore a force lever that can be found for example in the ankles where the weight of the body is in the center, leaving the ankle joint in front of him and the force behind, produced by the twin and soleus muscles.

In this way the ankles can exert the necessary force to jump and run by moving all the weight of the body that rests on them, which would be quite complicated in another way.

The third gender or interpower lever is a lever that enables fast and dynamic movements. It places the power between the resistance and the support, so the resistance arm is longer than the power.

It is the most frequent type of lever in the human body and as an example we can put the action of the brachial biceps in the flexion of the elbow, where the biceps is inserted in the forearm between the elbow that is behind and the resistance that would be displaced towards the hand by the weight of the load attached to the weight of the forearm.

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