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The most distinctive features of this genus and its closest relatives were a pair of long protrusions or horns at the rear of the skull, giving the head a boomerang-like shape. Most of the outer/front edge of each horn was formed by the elongated, blade-like squamosal bone. The rear edge of the skull and horns, on the other hand, was formed by ...
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Discarded exoskeleton of dragonfly nymph Exoskeleton of cicada attached to a Tridax procumbens (colloquially known as the tridax daisy)An exoskeleton (from Greek έξω éxō "outer" [1] and σκελετός skeletós "skeleton" [2] [3]) is a skeleton that is on the exterior of an animal in the form of hardened integument, which both supports the body's shape and protects the internal organs ...
In contrast, the hedgehog's short spines, which are modified hairs, [38] readily bend, and are barbed into the body, so they are not easily lost; they may be jabbed at an attacker. [37] Stinging Limacodidae slug moth caterpillars. Many species of slug caterpillar, Limacodidae, have numerous protuberances and stinging spines along their dorsal ...
Many animals with a wormlike cylindrical body have a hydrostatic skeleton with a flexible skin and a water-filled body cavity (coelom or pseudocoelom). They move by peristalsis, using opposed circular and longitudinal muscles, which act on the hydrostatic skeleton to change the body's shape. Hydrostatic skeletons are typically arranged in a ...
Body shape has effects on body posture [30] and gait, and has a major role in physical attraction. This is because a body's shape implies an individual's hormone levels during puberty, which implies fertility, and it also indicates current levels of sex hormones. [1] A pleasing shape also implies good health and fitness of the body. Posture ...
For example, against a straight punch to the face, an outside forearm block would aim to meet the outside forearm of the attacker, pushing the punch outward, leaving the defender slightly to the side of the strike causing it to miss. Typically, because of the angles involved, inward blocks are used against attacks aimed at the torso.
In other locking and compliance applications, the body of the Kubotan can be used to create pain. A typical pain compliance technique involves seizing an attacker's wrist and sealing both hands around it with the length of the Kubotan laid across the radius bone. Downward squeezing pressure is applied to the bone to take down the attacker.