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Flexion (Leg)

Reducing the angle between two bones (often remembered as a bending action).

 Flexion and Extension

Extension (Leg)

Increasing the angle between two bones (often remembered as a straightening action).

 

Flexion (Shoulder)

Reducing the angle between two bones (often remembered as a bending action).

 Shoulder Flexion & Extension

Extension (Shoulder)

Increasing the angle between two bones (often remembered as a straightening action).

 

Flexion (Arm)

Reducing the angle between two bones (often remembered as a bending action).

 Arm Flexion & Extension

Extension (Arm)

Increasing the angle between two bones (often remembered as a straightening action).