4/25/2023 0 Comments Octopus tentacle![]() ![]() After all, the flexible octopus has unlimited options for that movement. ![]() It also suggests that articulated limbs with joints may be the best evolutionary solution for such motion, the researchers argue. This dual signal allows the tentacle to form the perfect joint to bring a succulent tidbit to its mouth and shows how muscle can function just as well as bone as a structural element. The two impulses propagate toward each other and the elbow forms where the two meet. The researchers found that the octopuses contract muscles via two signals: one from the base of the tentacle and one from the tip. ![]() New research shows how the pliant animals create such a stiff limb.īiologist Binyamin Hochner and an international team of scientists wired the tentacles of five octopuses with electrodes to determine exactly how the creatures control the formation of a working replica of a three-jointed limb. But when performing point-to-point movements, such as those used during feeding, the octopus adopts a decidedly humanlike approach: it forms an elbow and other joints out of the tentacle grasping the food item and tips the treat back into its mouth. Lacking a skeleton, the animal can take any number of forms and can move its tentacles in any direction.
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