Opposition and Reposition of the Thumb Quiz
Opposition and reposition are special movements that the thumb can perform. These special movements are important to learn for both anatomy courses and clinical practice.
The opposition and reposition anatomy quiz below will test you on the key concepts of this special movement. Prior to taking this quiz, you might want to review our opposition and reposition movement notes, or watch the opposition and reposition anatomy video.
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Opposition and Reposition Quiz
1. What is opposition of the thumb?
a. Moving the thumb so that its tip contacts the tip of another finger on the same hand.
b. Moving the thumb away from another finger on the same hand.
c. Keeping the thumb still.
d. Rotating the thumb in a continual clockwise or counterclockwise rotation.
The answer is a. During opposition, the tip of the thumb meets (opposes) the tip of another finger on the same hand.
2. The thumb articulates with the trapezium bone of the carpus via what type of joint?
a. Hinge joint
b. Plane joint
c. Pivot joint
d. Saddle joint
The answer is d, saddle joint. The thumb (metacarpal 1) articulates with the trapezium via a saddle joint, which allows the thumb to move in various positions.
3. What is reposition?
a. A special movement that causes the thumb to rotate in a circular fashion
b. A special movement that allows the thumb to touch the finger tips
c. A special movement that allows the thumb and finger to return to their normal position
d. A special movement that causes the wrist to flex
The answer is c. Reposition is a special movement that allows the thumb and finger to return to their normal position.
4. The thumb can perform the following movements:
a. Flexion and extension
b. Circumduction
c. Opposition and reposition
d. Abduction and adduction
e. All of the above
The answer is e, all of the above. The thumb can perform flexion and extension, abduction and adduction, circumduction, as well as opposition and reposition.
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