How insects activate muscles to adapt to limbs removed

Adaptability explains why insects spread so widely and why they are the most abundant animal group on earth. Insects exhibit resilient and flexible locomotion, even with drastic changes in their body structure such as losing ...

How the insect got its wings: Scientists (at last!) tell the tale

It sounds like a "Just So Story"—"How the Insect Got its Wings"—but it's really a mystery that has puzzled biologists for over a century. Intriguing and competing theories of insect wing evolution have emerged in recent ...

Why skinks that lost their legs evolved new ones

A team of researchers affiliated with Clark University, the Museum of Natural History, Yale University and the University of Massachusetts Amherst, has developed a theory to explain why skinks living in the Philippines lost ...

Ancient crocodiles walked on two legs like dinosaurs

An international research team has been stunned to discover that some species of ancient crocodiles walked on their two hind legs like dinosaurs and measured over three meters in length.

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Leg

A leg is a weight bearing and locomotive structure, usually having a columnar shape. During locomotion, legs function as "extensible struts" - the combination of movements at all joints can be modeled as a single, linear element capable of changing length and rotating about an omnidirectional "hip" joint.

As an anatomical animal structure it is used for locomotion. The distal end is often modified to distribute force (such as a foot). Most animals have an even number of legs.

As a component of furniture it is used for the economy of materials needed to provide the support for the useful surface, the table top or chair seat.

This text uses material from Wikipedia, licensed under CC BY-SA