The act of closing the fingers to make a fist is an example of what type of joint movement (at the interphalangeal joints)?
A)Extension
B)Abduction
C)Flexion
D)Rotation

Question

Quizplus · Accepted Answer

Flexion is the bending or decreasing of the angle between two bones, which occurs when making a fist by closing the fingers. Extension is the opposite movement, where the angle between two bones increases. Abduction involves moving a body part away from the midline of the body, and rotation involves movement around a central axis. Neither of these applies to the movement of making a fist.

The Act of Closing the Fingers to Make a Fist