Extensor muscle: Difference between revisions

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this is shit!!!!!!!!!!! In humans, some muscles include 'extensor' in their name, some include;

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For further reference see genetic origin.

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+this is shit!!!!!!!!!!!
-An '''extensor muscle''' is any [[skeletal muscle]] that opens a joint increasing the angle between components of a limb, such as straightening the [[knee]] or [[Elbow-joint|elbow]] and bending the [[wrist]] or [[vertebral column|spine]]. With the exception of the knee joint the movement is directed backward. This action is known as [[Anatomical terms of motion|extension]].
-The type of muscle that has the opposite effect is the [[flexor muscle]], which closes a joint, decreasing the angle between limb components.
 In humans, some muscles include 'extensor' in their name, some include;