Which term refers to decrease in the angle between two bones at a joint?

Which term refers to decrease in the angle between two bones at a joint?

• A. Flexion
• B. Extension
• C. Rotation
• D. Circumduction

Answer: (A)

This question is about joint movement terms. A decrease in the angle between two bones at a joint is called flexion. When you bend a joint, such as curling the elbow or bringing the knee toward the thigh, the angle between the bones gets smaller, which is flexion. In contrast, extension straightens the joint and increases that angle. Rotation is turning a bone around its long axis, like turning the head or rotating the arm at the shoulder. Circumduction is a circular movement that combines several actions (flexion, extension, abduction, and adduction) to describe a cone-shaped motion of the limb. So the term for the decrease in angle is flexion.

This question is about joint movement terms. A decrease in the angle between two bones at a joint is called flexion. When you bend a joint, such as curling the elbow or bringing the knee toward the thigh, the angle between the bones gets smaller, which is flexion.

In contrast, extension straightens the joint and increases that angle. Rotation is turning a bone around its long axis, like turning the head or rotating the arm at the shoulder. Circumduction is a circular movement that combines several actions (flexion, extension, abduction, and adduction) to describe a cone-shaped motion of the limb.

So the term for the decrease in angle is flexion.