What action is characterized by extending outwards from the midline?

The action characterized by extending outwards from the midline is known as abduction. This movement involves taking a limb away from the center of the body, effectively increasing the angle between a body part and the midline. For instance, when you raise your arms to the side, you are performing abduction. This motion is essential in various physical activities and rehabilitation exercises, promoting mobility and function in the limbs.

In contrast, adduction refers to the movement towards the midline, flexion involves decreasing the angle between body parts (like bending the elbow), and extension increases the angle (such as straightening the elbow). Understanding these terms is crucial in the field of physical therapy, as they describe fundamental movements that are often targeted during rehabilitation and exercise planning.