Human Levers

exercises

The picture on the right shows the bone structure of the hand.

Identify the types of levers present and label the fulcrum, load and effort.

What do these levers multiply?

 

The picture on the left shows the bone structure of the foot.
What muscle controls the movement of the foot as we jump off the ground?

Where is the Achilles' tendon attached?

Identify the type of lever present and label the fulcrum, load and effort.

What does this lever multiply?

 

Describe more lever system in the body. Hint (you may wish to look at the shoulder).


Look at the videos of a student exercising and suggest the type of lever in action. Label the fulcrum, load and effort.

Leg-ups(120kb movie)
sit-ups (120 Kb movie)

 

Look at the ball and socket joint of the femur and hip on the right. Look at the attachment of the muscle to the femur.

What type of lever is this?

What advantage does this lever offer?

Continue with the foot.

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