The cheetah may be the fastest runner, and the peregrine falcon may be the fastest flyer, but mantis shrimp produce the fastest limb movements. Several species of mantis shrimp have club-shaped front limbs that they use to smash open hard-shelled molluscs and crabs. These "clubs" are hinged and usually held in the folded position against the body. The mantis shrimp unfolds its hinged clubs at tremendous speeds to smash their prey. Researchers measured the speed of these weapons at over 23 meters per second. That's about the speed of a 22 caliber bullet. It is so fast that it produces cavitation bubbles in front of the clubs that collapse producing a shock wave: The prey is hit twice, once by tremendous force of the clubs and a second time by the shock wave.
The sideways movement of a limb is called abduction or adduction. Abduction is moving a limb away from the body's midline, while adduction is bringing a limb closer to the body's midline.
abduction
circumduction
extension
Abduction is the term used to describe the movement of a limb away from the body.
Adduction movement occurs when a muscle moves a limb towards the midline of the body. This movement decreases the angle between the limb and the body.
circumduction
An aftermovement is the movement of a limb following the contraction of a muscle.
The circular movement at the far end of a limb is called circumduction. This movement involves a combination of flexion, extension, abduction, and adduction in a circular pattern. It allows for a wide range of motion in the joint.
Moving a limb away from the midline of the body is called abduction. This movement increases the angle between the limb and the body, moving it outwards or to the side. Examples include raising your arm to the side or spreading your fingers apart.
Straightening out a limb involves extending it so that it is in a linear or straight position, typically increasing the angle between the limb and the joint. This movement is controlled by the muscles and tendons surrounding the joint.
no one limb is not enough