3. How do snails and centipedes move ?
Answers
Explanation:
- A snail uses its single long, muscular foot to crawl on a layer of mucus-like slime that it secretes. ... These waves of muscle contraction and relaxation travel along the central portion of the foot from tail to head. The waves move much faster than the snail itself, and generate enough force to push the snail forward.
- Centipedes are able to attain rapid speeds by undulating their body slightly while walking. Centipede legs also grow in length towards the end of the body, which allows legs a bigger gait by avoiding the leg immediately in front.
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Having so many legs can be advantageous because of the ability to prevent falling, as well as having other legs take over when some legs may malfunction. In order to study locomotion and maneuverability by using multiple legs simultaneously, scientists created a centipede-like robot (with 12 legs) (Aoi et al. 2016). The same study reported the important relationship between stability and maneuverability, especially during the turning experiments carried out by their robot.
Another study examining centipedes showed that the points at which the legs contact the ground and sensations from surrounding legs impact their overall leg movements (Yasui et al. 2017). Centipedes can navigate different terrain with ease by coordinating their leg movements, likely through a decentralized method of sensory inputs. Scientists think this decentralization may be a way that moving robots can “think” in the future.
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