Levers in nature

(the Kangaroo)

The Kangaroo can jump seven metres and reach speeds approaching 60 km/hr, albeit in small bursts.

Its anatomical structure is a good example of the use of levers in nature. The image on the right shows a dissected leg of a kangaroo. Note its very long tibia and the connection of the Achilles tendon.

Click to see how the tendon and the bones form a lever.

What type of lever is this?
Has it evolved for speed or force multiplication?


View the video on the right.

What is the purpose of a really long tibia?

How does the kangaroo store energy for its long leaps?