What is the definition of flexion in anatomical terms?

The correct choice defines flexion as the action of bending a joint, which typically decreases the angle between two body parts. In anatomical terms, flexion occurs in various joints, such as the elbow and knee, where moving the forearm towards the upper arm or the lower leg towards the thigh results in a reduction of the angle at the joint. It is a common movement pattern in many exercises and functional activities. Recognizing that flexion is primarily associated with bending rather than straightening or extending is essential for understanding joint mechanics and movement dynamics in various physical contexts.