Difference Between Flexion and Extension
Main Difference – Flexion vs Extension Joints and muscles of the animal body are involved in motion. The straightening and contraction of muscles perform the motion of the joints. Flexion and extension are two anatomical terms used to describe angular motion. The direction of the movement or the change in the angle between the two bones determines the type of motion as a flexion or extension. The main difference between flexion and extension is that flexion is the action that brings the two bones together, decreasing the angle between the bones whereas extension is the action that increases the angle between the two bones.