Which term describes the action of bending or angulation?

• A. Extension
• B. Flexion
• C. Adduction
• D. Abduction

Answer: (B)

The term that describes the action of bending or angulation is flexion. Flexion refers to the decreasing of the angle between two body parts, such as bending the elbow or knee. This action brings the parts closer together, effectively reducing the angle. This is a fundamental movement in multiple activities, such as lifting an arm or leg.

In contrast, extension is the opposite action, where the angle between body parts increases, leading to straightening. Adduction refers to the movement of a body part toward the midline of the body, while abduction involves moving a body part away from the midline. Hence, flexion is uniquely defined by its relation to bending and the reduction of angles in joints.