Opposition Definition Anatomy

Opposition is the thumb movement that brings the tip of the thumb in contact with the tip of a finger. Opposition definition is a configuration in which one celestial body is opposite another such as the sun in the sky or in which the elongation is near or equal to 180 degrees.

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This movement is produced at the first carpometacarpal joint which is a saddle joint formed between the trapezium carpal bone and the first metacarpal bone.

Opposition definition anatomy. Opposition definition the action of opposing resisting or combating. Opposition brings the thumb and little finger together. Sellar joint this movement is called opposition ie of thumb to fingers.

Protraction and retraction refer to an anterior protraction or posterior retraction movement such as of the arm at the shoulders although these terms have been criticised as non specific. During opposition the thumb is rotated around its long axis. Dictionary thesaurus legal acronyms idioms encyclopedia wikipedia.

Reciprocal motion is alternating motions in opposing directions. It has been said that human civilization depends upon the opposition of the thumb. Definition planes movement and relationship terms.

A pair of movements that are limited to humans and some great apes these terms apply to the additional movements that the hand and thumb can perform in these species. Opposition is the movement that involves grasping of the thumb and fingers. The relation between the thumb and the other digits of the hand for the purpose of grasping objects between the thumb and fingers.

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